My sister told me about this idea (don't know if it was originally hers), so I designed it for her birthday. I thought I just might as well share.

It is designed in 3 different layers, first one is yellow, second one white (for the dots) and third one is black. It is really important to have perfect first layer adhesion, since the wings are only one layer thick. You will need to print 4 wings and glue together each pair of them for a nicer look.

Print settings:

Layer height: 0.12 (to make thinner)

Ironing activated

Stop at layer 2, change from your chosen color for the wing to white

Stop at layer 3 again and change from white to black