I agree with Vetoed. I would make the text, both lines, larger so that you can see it when you look at the avatar. And take into account the average size of a monitor. You could leave it black if you gave it a stroke or a drop shadow with a light color as shadow and these would make it stand out. As it is now, I can't even make out the words in the large version.
Otherwise, I think it is very cool. I like the hand and the rain, the colors, the warrior. OK, I like it.
One thing we do like to do here when we can is attribute the work; give credit to the artist for photo and drawings when we use them in a manipulation. If you buy stock, no need there. If you use work from a site like deviant art, just read the artists' rules. We often forget, but try to catch ourselves and correct it. Anyway, just a hint re: "good form." Thanks.
For 2 days of working, I'd say you have a good sense of design and will probably take to PS like the proverbial fish to water. Keep posting so we can take it all back and slam your next project! Just kidding. Keep up the good work.