What could Dumbell do different in this hand . My guess first he would need to think A SET ? Where did he make his biggest mistake?

PokerStars Game #24: Tournament #24, $5.00+$0.50 USD Hold'em No Limit - Level II (15/30) - 2010 :20 CT [2010]
Table '283  9-max Seat #4 is the button
Seat 1: kuTkiD (2400 in chips)
Seat 2: chiefgordo (6100 in chips)
Seat 3: itsmesee (3195 in chips)
Seat 4: urahurting (1455 in chips)
Seat 5: payemoi (1865 in chips)
Seat 6: wil1949 (6730 in chips)
Seat 7: Dumbell(4465 in chips)
Seat 8: Chipburnner (1435 in chips)
Seat 9: Cleiton-Br (1435 in chips)
payemoi: posts small blind 15
wil1949: posts big blind 30
*** HOLE CARDS ***
Dealt to Dumbell[Jd As]
Dumbell: calls 30
Chipburnner: folds
Cleiton-Br: folds
kuTkiD: folds
chiefgordo: raises 150 to 180
itsmesee: folds
urahurting: folds
payemoi: folds
wil1949: folds
Dumbell: calls 150
*** FLOP *** [3d 8d Ah]
Dumbell: checks
chiefgordo: bets 300
Dumbell: raises 300 to 600
chiefgordo: calls 300
*** TURN *** [3d 8d Ah] [Td]
Dumbell: bets 210
chiefgordo: raises 5110 to 5320 and is all-in
Chipburnner is disconnected
Dumbell: calls 3475 and is all-in
Uncalled bet (1635) returned to chiefgordo
Chipburnner is connected
*** RIVER *** [3d 8d Ah Td] [Ad]
*** SHOW DOWN ***
Dumbell: shows [Jd As] (a flush, Ace high)
chiefgordo: shows [Tc Ts] (a full house, Tens full of Aces)
chiefgordo collected 8975 from pot
*** SUMMARY ***
Total pot 8975 | Rake 0
Board [3d 8d Ah Td Ad]
Seat 1: kuTkiD folded before Flop (didn't bet)
Seat 2: chiefgordo showed [Tc Ts] and won (8975) with a full house, Tens full of Aces
Seat 3: itsmesee folded before Flop (didn't bet)
Seat 4: urahurting (button) folded before Flop (didn't bet)
Seat 5: payemoi (small blind) folded before Flop
Seat 6: wil1949 (big blind) folded before Flop
Seat 7: Dumbell showed [Jd As] and lost with a flush, Ace high
Seat 8: Chipburnner folded before Flop (didn't bet)
Seat 9: Cleiton-Br folded before Flop (didn't bet)