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Printable Mermaid Tail Cake Topper Tutorial

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Three pictures in a collage show different angles of a printable mermaid tail cake topper made of a blue mermaid's tail, seaweed, shells, bubbles, a starfish, and paper cutout letters that read "Under the Sea." The cake topper sits in the center of a small round cake with ombre teal frosting. Text across the center of the image says, “free DIY under the sea mermaid cake topper.”
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DIY Mermaid Tail Cake Topper

When my daughter Ella turned three, she was all about mermaids. So, I decided to get busy planning Ella’s mermaid birthday party and photoshoot, and I went all out for it! I’m a closet graphic design doodler when I am not busy with paper flowers, so I came up with some fun ideas and new tutorials for a deep dive into all things mermaid. One of those ideas became this ‘Under the Sea’ Printable Mermaid Tail Cake Topper instant download digital file that you can have for FREE!

You can do so much to create a magical mermaid birthday party. Start with the free “Under the Sea” cake topper, and then grab my other mermaid party ideas. You can make mermaid cupcake toppers with printable sea items, birthday party hats, a photo booth wall with photo props and my sea-inspired flower templatesmermaid t-shirts, or “Little Mermaid Squad” water bottle labels to use as party favors in a DIY Mermaid Party Gift Bag. Use the mermaid scales flower templates to make a mermaid banner and mermaid birthday signs. I even made a paper mermaid dress!

Your little mermaid is sure to make a big splash at your mermaid party!

Related Craft Projects for the Next Party

Hawaiian Party Decorations

Lacey Style Flower Tutorial

Free Fox SVG Cut File

DIY Unicorn & Dinosaur Valentine Box

The mermaid tail cake topper lays on top of a cake covered with sea-foam green roses. The topper has a mermaid tail, sea elements, and scripted gold letters saying "Under the Sea."

I’m excited to show you just how easy it is to create DIY mermaid cake toppers, and most of all, I can’t wait to show you the whole mermaid-inspired photo shoot when it’s finished! I am teaming up with my new friend from Press, Print, Party and using her awesome mermaid printables!

The two-layered Cricut "Under the Sea" cake topper with a mermaid tail and sea elements lays on a white background. CC Designs logo is in the lower left corner.

Supplies for the Printable Mermaid Tail Cake Topper

If you don’t have a cutting machine for the SVG files, a printable PDF file is included. Use scissors to cut around the design silhouette.

A note about our privacy policy and commercial use for the Printable Mermaid Tail Cake Topper: this is intended for personal use. If you would like to sell the topper made from the cut file, you may do so as long proper credit is given. Link our website or tag us on Instagram with your creations.

How to Assemble the Mermaid Tail Cake Topper

Assembling the Printable Mermaid Tail Cake Topper is a snap. You can also watch the full tutorial below to see how I created mine!

Step 1: Print and Cut the Cake Topper Pieces

Print and cut all the cake topper elements and gather all your supplies before you begin. The base and first layer of the topper is the large piece with the words “Under the Sea” connected to a mermaid’s tail. If you follow my design, this piece is made from gold poster board.

Step 2: Glue the Cake Topper Pieces Together

Using your hot glue gun, attach the cut-out mermaid tail to the mermaid tail on the base of the topper (in gold.) Next, glue the shell cut-out onto the shell base. Finally, glue the bubble cut-outs to the bubble bases.

Step 3: Attach the Cake Topper to the Base

Next, we will adhere our sea elements to the topper’s base. If you follow my layout, these are your next steps:

  • Glue the shell to the front of the tail’s base.
  • Glue the seaweed to the right and left sides of the base.
  • Glue the starfish behind the letter “T”.
  • Glue the bubbles in various positions on the front of the topper.

Step 4: Cut and Attach the Wooden Skewers

The skewers are what hold this mermaid tail cake topper in place on your birthday cake. You’ll want to score the skewers and cut them down to size before attaching the cake topper. Follow these steps:

  • Score your skewers with the wire cutters about three inches from the pointy end to ensure they stay even. Then, cut each of the two skewers at the score line, one at a time, using the wire cutters.
  • Next, flip over your cake topper and glue each skewer to the back of the topper base. Be sure to choose areas that won’t show the skewers through the cut elements, and keep the skewer length even.
  • Glue a small strip of card stock over part of the skewer to reinforce the skewer hold. Press the strip of paper firmly around the skewer edge. 
  • Remove any hot glue threads carefully, and let your topper glue dry before moving on to the next step. Once the glue has dried, gently push the skewers into the top of the cake and enjoy!

How to Make a DIY Mermaid Tail Cake Topper: Video Tutorial

Watch the full tutorial below to see step-by-step how I make this printable mermaid tail cake topper!

Remember, there isn’t a party like a mermaid-themed birthday party because this mermaid sea adventure party comes with free printables!

Mermaid Monogram SVG Cut Files
$4.50
Mermaid SVG Cut Files
$5.00
Under the Sea Mermaid Paper Flower Set - 4 flower templates
$10.95
Whimsy Style with Seaweed- Paper Flower Templates
$3.99
Chrysanthemum Flower Template
$3.99
Giselle Style Paper Flower
$4.50
Giant Paper Dahlia Flowers-DIY Flower Wall
$5.00
Iris Unicorn Rainbow Flowers- Large Rainbow Paper Flowers
$4.50
A light blue cake is frosted to look like ocean waves and is displayed in front of a blue and green backdrop reminiscent of the ocean. The large topper says "Under the Sea" in gold and has a starfish, shell, bubbles, and a mermaid tail.
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A small round frosted birthday cake sits on a cake stand between two large pink and purple paper flowers. The cake is frosted with a light ombre-blue frosting and topped with a DIY mermaid-themed cake topper that says “under the sea” in gold letters.
cropped-mermaid-cake-topper.jpg

Printable Mermaid Tail Cake Topper

Active Time: 30 minutes
Total Time: 30 minutes
Difficulty: Easy

This easy-to-make and assemble mermaid tail cake topper is the perfect accessory for a mermaid or Under The Sea-themed birthday party!

Instructions

Step 1: Print And Cut The Cake Topper Pieces

Print and cut all the cake topper elements and gather all your supplies before you begin. The base and first layer of the topper is the large piece with the words “Under the Sea” connected to a mermaid’s tail. If you follow my design, this piece is made from gold poster board.

Step 2: Glue The Cake Topper Pieces Together

Using your hot glue gun, attach the cut-out mermaid tail to the mermaid tail on the base of the topper (in gold.) Next, glue the shell cut-out onto the shell base. Finally, glue the bubble cut-outs to the bubble bases.

Step 3: Attach The Cake Topper To The Base

Next, we will adhere our sea elements to the topper’s base. If you follow my layout, these are your next steps:

  • Glue the shell to the front of the tail’s base.
  • Glue the seaweed to the right and left sides of the base.
  • Glue the starfish behind the letter “T”.
  • Glue the bubbles in various positions on the front of the topper.

Step 4: Cut And Attach The Wooden Skewers

The skewers are what hold this mermaid tail cake topper in place on your birthday cake. You’ll want to score the skewers and cut them down to size before attaching the cake topper. Follow these steps:

  • Score your skewers with the wire cutters about three inches from the pointy end to ensure they stay even. Then, cut each of the two skewers at the score line, one at a time, using the wire cutters.
  • Next, flip over your cake topper and glue each skewer to the back of the topper base. Be sure to choose areas that won’t show the skewers through the cut elements, and keep the skewer length even.
  • Glue a small strip of card stock over part of the skewer to reinforce the skewer hold. Press the strip of paper firmly around the skewer edge.
  • Remove any hot glue threads carefully, and let your topper glue dry before moving on to the next step. Once the glue has dried, gently push the skewers into the top of the cake and enjoy!

Did you make this project?

Please leave a comment on the blog or share a photo on Instagram

About Abbi Kirsten

Welcome to my colorful corner of the internet, where we play with vibrant crafts and unlock your creative magic! Hang out with me and get lost in a fun array of projects, tutorials, and products, from stunning papercraft ideas to flower templates, Cricut help for beginners, and endless crafter’s hacks. 

Join the Member Vault and participate in my monthly Craft-Alongs in my Facebook group to access all the magic!

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One Comment

  1. Thanks for the files! They are perfect!