Getting Better at Post-Flop

This is kinda a boring hand, but I am posting this because I am trying to get better at making marginal calls like this.

Party Poker No-Limit Hold'em, $ BB (10 handed) FTR converter on zerodivide.cx

MP3 ($52.88)
Hero ($50)
Button ($48.26)
SB ($210.97)
BB ($46.50)
UTG ($46.25)
UTG+1 ($50.59)
UTG+2 ($49.90)
MP1 ($53)
MP2 ($26.15)

Preflop: Hero is CO with 6:heart:, 6:club:. SB posts a blind of $0.25.
5 folds, MP3 raises to $2, Hero calls $2, 1 fold, SB (poster) calls $1.75, BB calls $1.50.

Flop: ($8) 3:diamond:, 2:spade:, 9:diamond: (4 players)
SB checks, BB checks, MP3 checks, Hero bets $4, SB calls $4, BB folds, MP3 folds.

Turn: ($16) 8:spade: (2 players)
SB checks, Hero checks.

River: ($16) 8:club: (2 players)
SB bets $6.99, Hero calls $6.99.

Final Pot: $29.98

i like it

Here's another one that just happened.

Party Poker No-Limit Hold'em, $ Hero (10 handed) FTR converter on zerodivide.cx

SB ($55.93)
Hero ($87.39)
UTG ($51.11)
UTG+1 ($181.55)
UTG+2 ($50)
MP1 ($52.10)
MP2 ($49.50)
MP3 ($50.95)
CO ($49)
Button ($36.80)

Preflop: Hero is BB with 8:spade:, 4:club:. SB posts a blind of $0.25.
UTG calls $0.50, UTG+1 calls $0.50, 2 folds, MP2 calls $0.50, 3 folds, SB (poster) completes, Hero checks.

Flop: ($2.50) 8:diamond:, A:diamond:, 4:diamond: (5 players)
SB checks, Hero bets $2.5, UTG calls $2.50, UTG+1 folds, MP2 folds, SB folds.

Turn: ($7.50) 2:spade: (2 players)
Hero bets $6, UTG calls $6.

River: ($19.50) A:club: (2 players)
Hero checks, UTG checks.

Final Pot: $19.50

Why not fire a second barrel against him on the turn? (first hand)

Second hand, I like it, villain has KQ with Kd?

I forget what villain in second hand had. All I know is that it was a big diamond. In the first hand I took my shot and it missed. On the turn I figured if he was drawing to the flush then I had made enough value from the call without odds on the flop to let him see the river free, and if he had the TP then he wasn't getting any more of my chips. When he bet the river on an obvious bluff, I called. and He flipped his missed Ax and I scooped.

I play both hands the same