Desktop Screenshot 5-6-09

Like the shading you're doing here. Though I think you might want to add in more gradients, because it seems like one gradient makes it stand out too much compared to the base colors.

Don't shade with black. Rather, don't have black be your base unless necessary. It's an absolute color, so you can't really have much control after it.

Lines are great here. Nice sense of depth you've got there.