My nephews loved this picture, and I loved drawing it for them. There's something awesome about giving a kid a unique picture of his favorite character. Money, toys, etc. can't replace it. You're giving them something that only they have, and they really treasure it.
As for Ben 10, great show with a great concept. The main reason I was excited about doing this was because I knew the colors could really rock this picture and make it something special. I wasn't disappointed.