This Amaryllis flower petal is unique from my traditional wider petals, and with the use of metallic cardstock, the depth of the center turned out better than I thought.
To downsize the flower, subtract the use of the extra-large petal to downsize to a large. You can deduct the extra-large and large petal to downsize to a medium and so forth with a small.
You can still create 3 or 4 layers to keep the flower full, but only use 2 or 3 of the smaller petal sizes instead of all five-petal sizes for an overall smaller flower.