PokerStars Hand #217165125476: Hold'em No Limit ($0.15/$0.30 USD)

CO ($70.16 in chips)
BT ($27.50 in chips)
SB ($31.55 in chips)
VILLAIN ($30.45 in chips)
HERO ($15.75 in chips)
MP ($30 in chips)
* HOLE CARDS
Dealt to cfesta23 [Ac Qd]
HERO: raises $0.60 to $0.90
MP: folds
CO: folds
BT: folds
SB: folds
VILLAIN: raises $1.95 to $2.85
HERO: calls $1.95
FLOP [9s 3s 8c]
VILLAIN: bets $1.83
HERO: calls $1.83
TURN [9s 3s 8c] [Qc]
VILLAIN: bets $2.98
HERO: raises $8.09 to $11.07 and is all-in
VILLAIN: calls $8.09
RIVER [9s 3s 8c Qc] [6h]
SHOW DOWN *
kdm0505: shows [Kc Kd] (a pair of Kings)
cfesta23: shows [Ac Qd] (a pair of Queens)
kdm0505 collected $30.07 from pot

LAST ONE...Is this a bad raise in this spot? I guess I really made a mess of this session by trying something to work on a new skill. Any advice on how to work new skills/theories into your game without blowing yourself up like I did?