Ok, I use blender and selected the uv map on base of the vanilla texture. That means I just unwrapped one arm and one leg as it should be. So do I have to make new seams on the exact same position on the other side, mirror it and the lay it over the existing uv of the other side? That ist quite a lot of work. Is there a option in blender which allows me to tell the program to use the uv from the left arm for the right arm, just mirrored?
To be clear: I have one arm seamed and mapped. Perfect. On the other arm, there are no seams, so when I unwrap it, I have one perfect one on the texture and one island without the seams, which I can't overlap with the first one. Is there a way to tell blender to use the first island uv for the second arm? So I got one UV island for both arms?