I think I've identified another leak.. I try to slowplay but more often than not, I get sucked out on. When is it correct to slowplay? I thought this would be a good situation.. was I wrong?

PokerStars No-Limit Hold'em, $0.05 BB (9 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

Hero (CO) ($6)
Button ($11)
SB ($4.95)
BB ($2)
UTG ($9.41)
UTG+1 ($12.42)
MP1 ($12)
MP2 ($4.50)
MP3 ($8.29)

Preflop: Hero is CO with A, 2
1 fold, UTG+1 calls $0.05, 2 folds, MP3 calls $0.05, Hero (poster) checks, 2 folds, BB checks

Flop: ($0.22) 10, 8, A (4 players)
BB checks, UTG+1 checks, MP3 checks, Hero bets $0.10, BB raises to $0.25, 1 fold, MP3 calls $0.25, Hero calls $0.15

Turn: ($0.97) J (3 players)
BB checks, MP3 bets $0.15, Hero calls $0.15, BB calls $0.15

River: ($1.42) J (3 players)
BB checks, MP3 checks, Hero bets $0.70, BB raises to $1.55 (All-In), 1 fold, Hero calls $0.85

Total pot: $4.52 | Rake: $0.20