Thanks for the responses!
"Transparency is optional", *breaths sigh of relief* XD
Ive started work on Seraphs and futas, but will shift more to males and rarities.
Not sure exactly what to name images. Just copy what the other portrait packs do I guess. As for tastefullness/lewdness, be prepared for some of the latter with futa. There are only so many pictures of the rarer species, so finding several with just a panty bulge is impossible.