Like me that they show me an instruction manual to be able to make textures as from the bodypaint, I not to do him and no dominating the UV Map.
I put some imagery in order that they see like beginning the work and where I give birth to myself ( and may see if I do something wrong in the configuration of the model ) :(
the texture bar on the right side in your tools do it already. Your model doesnt have uv maps yet because your using the default character. You have to assign a new uv map then choose create texture from polypaint, then clone it to get it into the texture list on the left so you can export. Im not a fan of uv maping in zbrush, havent tried it in 3.5 yet but im still learning the experience.
Im also not shure if this is the place to post questions, its a tutorial forum.