good LAG play or am i a wreckless donk?

[aggie]

villian is 28/5 over 90 hands (some of which were 3-handed)....He seems pretty tight but he's gotten the best of me so far. He's made me fold several times so far by minraising. My image is definitely LAG and perhaps a bit wreckless.

PokerStars No-Limit Hold'em, $4 BB (5 handed) converter

BB ($453.40)
UTG ($115.75)
MP ($674.85)
Hero ($762.60)
SB ($329.95)

Preflop: Hero is Button with J[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img].
UTG calls $4, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $20</font>, <font color="#CC3333">SB raises to $36</font>, <font color="#666666">1 fold</font>, UTG folds, Hero calls $16.

Flop: ($80) 6[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $48</font>, <font color="#CC3333">Hero raises to $726.6</font>