One major improvement in my opinion would be to make the background black, although with your limited software I don't know if you can.

Meh, it would take me a while but it can be done.
Why don't you download GIMP? It looks pretty basic as they have said. But good.
Because my dad has me working on offline artwork and not graphics. Which is cool, mosaics are awesome.
I like it, but I think it would look better with a black background, like others have said. The inner legs fade out a little bit though, so you shoud work on that.
Hmmm, don't know if I can do anything about that. I'll have to try.
Thanks guy for the crit. I reaaaaaaallllllly appreciate it.