How badly did I butcher this hand?

[Under Control]

First hand, party 50 NL, no reads

Seat 1: koreys ( $46.5 )
Seat 2: bogeybu ( $57.35 )
Seat 3: Payback31 ( $202.45 )
Seat 4: fatbaastrd01 ( $52.55 )
Seat 6: Micke_99 ( $58.3 )
Seat 7: Bournehard83 ( $55.95 )
Seat 8: TSmitty ( $70.5 )
Seat 9: TPearson ( $28 )
Seat 10: AceBuster ( $47.25 )
Seat 5: Hero( $50 )
Bournehard83 posts small blind [$0.5].
TPearson posts big blind [$1].
Hero posts big blind [$1].
** Dealing down cards **
Dealt to Hero [ Ad Kh ]
AceBuster folds.
koreys folds.
bogeybu folds.
Payback31 folds.
fatbaastrd01 folds.
Hero raises [$3].
Micke_99 calls [$4].
Bournehard83 folds.
TPearson folds.
** Dealing Flop ** [ Ts, Ah, 4h ]
Hero bets [$7].
Micke_99 calls [$7].
** Dealing Turn ** [ Td ]
Hero checks.
Micke_99 bets [$12].
Hero calls [$12].
** Dealing River ** [ 7s ]
Hero bets [$10].

[BlueBear]

my default play...

Always bet the turn, fold to raise

if your bet is called, bet a small blocking amount at the river or check-call/check-fold depending on the looseness of the opponent

[BlueBear]

against a typical opponent, i'm betting the turn and river.

[Under Control]

I think that is the play I usually make here, but on this one I thought this: by betting the turn, I let him fold worse hands that are probably drawing to 0 or 3 outs (It totally didn't register with me at the time that there was a two-flush on the board. I was multitabling, so I did'nt make a plan for the river. When I got there, I realized that I'd be sick if he moved in, so I made the blocking bet. Would the way I played it be acceptable had there been a rainbow flop?

[eagletmr]

I would bet the turn and river and fold to a raise in either case. You could very easily be up against a lower kicker in a party game that will call you all the way down. You can keep the turn and river bets to a medium size if you are more comfortable with that type of blocking play. But make his kicker or draw pay. Two pair or a set will probably raise the turn.