Instructions:

In the file you will find the necessary pieces for two butterfly boxes.
1: cut the file in any type of 3mm material
2: assemble the inner box
3: after the inner box is glued, take a butterfly piece and align the box in the center of the butterfly and proceed to glue. Repeat this step on the opposite side.
optional: you can cut the outer shape of the butterfly in colored paper (in my case it was pink cardboard) to hide the color of the mdf and give it a nice color)