Simple little hand, stack size made it a bit awkward for me. I don't know if I had any reads or stats on the villain at the time, so let's assume he's unknown and our image is nittag. C-bet size should probably be closer to pot? What do we do on flop, and what is plan for later streets?

Party Poker No-Limit Hold'em, $4 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Button ($398)
Hero ($533.60)
BB ($1052.40)
UTG ($451.60)
MP ($216.20)

Preflop: Hero is SB with A, 3.
3 folds, Hero raises to $14, BB calls $10.

Flop: ($28) 2, 6, 8 (2 players)
Hero bets $20, BB raises to $64, HalvSame..??