Painted Cube

This is my cube that I did with the paintbrush in Photoshop CS2 and my Wacom tablet. It was kind of hard but not too difficult. I dont think I did that great a job though. All the suggestions you can offer would be helpful. Technical wise, or aesthetic concerns. Anything really. It came out better than I was expecting though. Not like the tutorial. The image was originally 1000 x 1000 so the smaller version gives a good view, to see details I guess enlarge it.