Leak #1 Overcards.

pre-flop okay...pre flop play is the easiest for anyone to learn as per SSHE

the feedback given to this point is all good, i would suggest to attempt to vary your some play based upon your assessment of the other players...sometimes not betting versus passive callers is good, particularly on a hand that developes into a marginal one post-flop...indeed, you strive to be somewhat unpredictable, thus your opponents must take more risk in playing against you...by always betting when you think you might be ahead, you make it easy for your opponents...indeed, you would like your opponents in this game to say to themselves afterward...gee, what a small pot-i should have bet more...

the skill of poker is learning when/how to vary you play versus your opponent.

best of luck