when texturing it is extremely hard to make a straight line on a character. particularly a morph'ed character. once you put the morph's in the body shape itself screws the lines up the more morph, the worse it gets.
truthfully, the only way I know to get around it is to have a program like Carrara 7 that allows you to paint directly onto the 3d object. the problem with that is that painting in carrara doesn't give as nice of a result as painting in photoshop.
but if you paint in carrara for the lines as a guide on the morph'ed figure you could then bring the texture into photoshop for improvements. Now I have tried a few times to paint in carrara on models directly. all my tests have been horrible
so there is a learning curve.