Stones Textures great for spheres?

I had request from friend to take a texture and make it work well on flat sphere prim.
I tried few techniques like spherizie tool in Adobe which is new tool for me in hopes it would work but not sure if it will have same effect in game.
Any other recommendations in creating textures that would work on round flat bases time prims?

thanks I tried spherize it wasn't quiet what I wanted when I uploaded it the game.