The 44.4% c-bet success doesn't include the times you can win it on the turn and river. If you are time and again c-betting, then giving up on turn and river, some players may note this and call the flop to bluff the turn. Obviously at lower stakes less people are going to be doing this, but there may be a few people with analytical skills down there.
I'd concentrate on making value bets and c-bets look no different, ie, time taken to bet, bet sizing, etc. I tend to stick to 2/3 pot c-bet and value bet on flop if heads-up. You could also consider when value betting the flop, if you get called, to make it look as though you are giving up on the turn in order to contradict players' notes on you.
At 10nl, I find there's a lot of 2nl players tired of being sucked out on by fish and decide to play out of their bankroll and play better players at 10nl. How you interpret this may be different to me, but i think there will be a lot of min. 3-bet bluffs, calling too much to hit draws, etc. Basically just try to figure out in each case why they'd call