Photographs -> Skin techniques

I'm trying to use real photographs to make avatar skins. I have different pictures for the arms, torso, legs and face. I'm able to place the pictures correctly (i use liquefy or just transforms). However I'm blocked for the following:

1. I'm having a tough time figuring out how to blend the connecting parts of the Avatar seamlessly (leg, torso, face).
2. Matching the skin tones. Since each part comes from a different photograph, the skin tones are a bit off and I want them to match.

Does anyone have advice on which features/techniques I should use to achieve this. I'm using Photoshop CS.

Anthony

You'll need to get very good with using image adjustments (hue and saturation, color balance, and levels). Get your pieces as close as you can then use layers masks to blend your parts together. After that you can use cloning and overpainting to smooth the blending more. This is how I do my skins. They end up about 50% photo, 50% hand painting.