Weaknesses/holes in your game as beginner

[justfold1]

I'm working on evaluating my own play and fixing any/all holes in my game. Right now, I play frequently on Poker Syndicate (check it out btw, pretty cool site) and am usually tight but aggresive, middle stakes usually/sometimes high...limit...relatively new player to poker...so I probably shouldn't play that level, but thats the level that makes me go...

My question is: What errors did you notice you were making when you first started playing and how did you go about correcting them?