Hmm, not bad for your first - but later on as you learn more and more about photoshop, and discover it's true potential.. you will realize that you can do way better than that. But really, as I said again, not bad at all for your first
If this is your very first 'publicly released' Photoshop image, you should burn it to CD and keep it for posterity. In a few years you can look back on it and smile It's not a bad first attempt. Welcome to the wonderful world of Photoshop!