I will really depend on what ver. of PhotoShop you have as I think the 3D tools did not come in till ver. CS6 (not sure) and I don't own that version I have only CS3. If I had to do this job I would use the 3D tool in Illustrator. Here is a poor tut of photo's of a mug which use warp mesh in PhotoShop: https://www.youtube.com/watch?v=EBcXINNbKy8