One possible major leak you have is calling when the villain hits the straight or flush or whatever, especially on the river. If an obvious draw completes, and you have a hand like top pair or a weak 2 pair or worse, then if villain raises you must fold.

That's something I learned while building my current roll at 2nl. I played 4 tables at a time, buying in for $2, and made over $100 at a bit over $4 an hour. Yes I probably ran quite good but often it was just letting my opponents make huge mistakes. You can win at these stakes without doing anything special, just bet when you think you are ahead, and check/fold (or call with good odds) when it looks like you are probably behind.

Disclaimer : I'm a bit drunk right now.