I really like what you did here. It's simple enough but it has a good progression, so it keeps you interrested for what's going to happen next.
However, I gotta say you milked that drum loop ALOT, which made the song repetitive despite the short lenght and the ending is a bit anti climactic.
Overhall, it's a neat little loop you got there and as long as you keep improving, it's going to get better and better.
Keep up the good work!