This is a real butterfly, 3D scanned from a source on SketchFab, modified and edited heavily to be suitable for 3D printing. 

This model was printed on an SLA printer using clear resin, which looks best, and so it is recommended that you print at a slightly off vertical angle with supports. Reduce the support attachment points to as small as possible and use small layer sizes to eliminated lines. If needed glaze with resin and re-cure