Hello,

I want to make some bump maps and maybe parallax maps as well, for a sphere, just a simple sphere without bumps. and after I apply those maps on the sphere, I would like it to look like in the picture below.

How can I do this ? How can I "paint" the bump maps as I want, in Photoshop or other tool ?
Another question: is there a tool that let me extract a bump map from a 3D model ?

Thank you very much!