I still think you'll save yourself a lot of work if you use a suitable skin tile as a base. Back when I briefly was working on a texture for Antonia I used that fill method, it can give you a very quick method of having an entire base body texture without relying on photo resources for that. After the fill you can very easily fix seams and detail through various methods and 3d painting. These texture previews are the culmination of about 4 days work on Antonia, I decided to go back to some unfinished La Femme projects that I'm still working on. This might be useful to you in some way...

Here's a close up of the flat ear texture with blood vessel detailing. The basic shading is derived from a set as multiply baked AO map...