If I try to create a 3D effect in Photoshop (or on paper), I always get it wrong. I remember how easy it was to create cubes in graph paper, but hard in plain paper.
I wonder is there are any grids available to help me with this? This grid for example looks like what I am looking for, but it seems to be for a particular purpose. Are there any other Photoshop grid to create these 3D effects?