100NL,Whats wrong with my bet sizing?

[pokerfan]

MY AK ran into tough spots. Is there anything wrong with my 3 bet and c-bet sizing? Do you insta c-bet with your missed AK in these situations?
hand 1: villain is unknown.
No-Limit Hold'em, $1.00 BB (8 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

CO ($275.40)
Button ($88.40)
Hero (SB) ($102.50)
BB ($132.35)
UTG ($108.30)
UTG+1 ($149.90)
MP1 ($90.05)
MP2 ($174.30)

Preflop: Hero is SB with A, K
5 folds, Button bets $3, Hero raises $13, 1 fold, Button calls $10.50

Flop: ($28) 8, 2, Q (2 players)
Hero bets $17.50, Button calls $17.50

Turn: ($63) 3 (2 players)
Hero ?

hand 2: villain is 21/17/1.2 over just 30 hands

No-Limit Hold'em, $1.00 BB (8 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

SB ($103.40)
BB ($121)
UTG ($80)
UTG+1 ($100)
Hero (MP1) ($100)
MP2 ($100)
CO ($100)
Button ($105.40)

Preflop: Hero is MP1 with K, A
1 fold, UTG+1 bets $4, Hero raises $12.50, 5 folds, UTG+1 calls $8.50

Flop: ($26.50) 8, 4, J (2 players)
UTG+1 checks, Hero bets $15.50, UTG+1 raises $34, Hero ?

[oskar]

First hand I would make it 11.5 and bet 3/4 instead of 2/3 on the flop - like... hey der... I makes you pay for your draw with my solid hand.
c/r on the turn would be kind of sexy, but I try to stay away from these lines atm, and just c/f like a nit.

Second I would bet a little more on the flop and fold to the raise. If this was co vs button, I might consider something, but I think he has a set or a stupid QQ-AA here a lot.

It's really hard for me not to float there with all the HU I played lately, where I could sometimes just call down with AK high there and expect to be good, but once I stopped defending too much at FR I'm doing much better.