Marbles

I started off with verithin pencils (I thought they were the same as the regular pencils except smaller) but then I found that if you invest in some of the regular prismacolors, you'll notice a huge difference ^^ The verithins are harder lead and so they don't put down as much pigment, and thus are harder to use! I don't use my verithins very much anymore except for doing the outlining in the initial sketch or adding texture.

Then again, this was drawn back in 2007, so maybe you have regular prismas now

Your color choices are really good though, and the reflections and shapes have been acheieved well