villain is 46, 20 and a heavy loser over 1000 hands, bets a lot of flops. Not sure about the flop call, but I figured my K&Q outs were probably good, that i may be able to rep the flush, and as well the oesd. Should my turn bet be bigger? how big should I value bet?

Prima Network No-Limit Hold'em, $0.10 BB (6 handed) Hand History converter Courtesy of PokerZion.com

Button ($3.51)
SB ($6.97)
BB ($11.44)
UTG ($7.74)
MP ($12.04)
Hero ($12.51)

Preflop: Hero is CO with K[], Q[].
UTG calls $0.10, 1 fold, Hero raises to $0.4, 2 folds, BB calls $0.30, UTG calls $0.30.

Flop: ($1.25) J[], T[], 8[] (3 players)
BB bets $0.9, UTG folds, Hero calls $0.90.

Turn: ($3.05) A[] (2 players)
BB checks, Hero bets $2, BB calls $2.

River: ($7.05) 4[] (2 players)
BB checks, Hero bets ???