I click my HUD, and see what both opponents Fold to C-Bet ratio is. If both are very high, I'd bet here. Since there's a draw out here, I'd be more prone to bet it than not. Also. it's picking nits, but I think you can get away with a like .13-.14. Everyone who's folding is folding for 2/3rds pot anyway. River bet was also small.

I would argue that your Flop could be considered standard in the right environment.

Turn is debateable,

River bet sizing is not good IMO.