Go with it?

[KdoubleK]

160 shootout for WSOP seat, 1st table. We're headsup and villain is aggressive but not stupid. The last guy just busted out thinking he was getting too far out of line, and he was, but hard to say when and how often.

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (2 handed) converter

Hero (t5330)
Button (t8170)

Preflop: Hero is BB with T[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">Button raises to t450</font>, <font color="#CC3333">Hero raises to t1200</font>, Button calls t750.

Flop: (t2400) 6[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t1500</font>, <font color="#CC3333">Button raises to t3000</font>

Where did I go wrong here and what to do now?