The bg is typical of a newbie but it doesn't look that bad. The color of 50's psd goes well with the bg so that's cool. The G-Unit symbol is way off though, you shoulda tried to blend it or something. The bottom text is a good pick, but the 'M' is just too annoying, NEVER use that color again. You should look up for a really nice font and have the 'M' be your personal logo because i like your idea but THAT 'M' is just way off.
2.5/5 from me but 3/5 because it was just your second banner