One thing I've found is that a program like Deep Paint 3d, with it's direct pipeline to PhotoShop, makes things much easier. You can simply position the model in Deep Paint so that it matches the model in the photo, then you can send to PhotoShop a flat template of your view, onto which you can cut and paste areas of the body. If your high-resolution photos were acquired from 3d.sk (or similar merchant packs) you should be able to cover the model sufficiently. Then you can use the stamp tool in PhotoShop and/or Deep Paint to eliminate sharp transitions and blend the pieces into a unified whole. 

I think BodyPaint lacks the PhotoShop compatibility, which might explain why some of its users complain about the difficulty of texturing V4's chainsaw massacre UVs.

Of course, you can do your textures entirely in PhotoShop (or a similar photo editing program) with V3. The primary problem with this approach is the seams, which occur at the edges of the UV map. (If you don’t know what uvs are, you should use the search feature here and at Google to catch up.) You can cover the entire texture map with a plain color that matches the skin generally, and blend the skin into it before you reach the edges. This will create a smooth transition. 

You must have a photo-editing program to create textures. PhotoShop is the best option. It would be great to have DeepPaint 3d, but this program is expensive and it can be very frustrating to learn. 

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