Another year closer to the grave... Wait 'til your 24 and you realize it's your last year of being the key demo... and no longer socially relevant or "hip."
Anywho! Good work. The anatomy looks a little stiff, but the pose looks pretty natural. The color is flat but crisp, and the small details in the clothing are done pretty well. All in all, a pretty solid job. Keep at it, bruddah. Pretty neat idea, too - drawing something every year on your birthday. I should start doing that.