I made this icon template for my app, but didn't use it finally.
So I thought I'd share it with ya. Making it looks 3D is not hard actually.
All it needs are some shadows and some highlights.
Made this texture for my latest app. It is easy to make - just add Gaussian Random Greyscale noise on a black background. This texture will look better once you shade (use Brightness/Darkness brush) it according to shape.