if i'm first to act it means i'm holding something like AJ, AQ, AK so i probably have 13-14 outs i'm most likely a favorite to win the hand at this point so of course i'm betting out about 2/3 of the pot. If its checked to me but there are others to act behind me i probably have the same hands as above but i could also have played AT under the right circumstances so i probably dont have 2 overcards to the flop so i'll bet out a little more than the pot and hope to take it down right there and if i'm called i know i'm up against something and its either hit the flush on the turn or go into check/fold mode. Last to act being checked to me i could have any AXs garbage so i'll bet the pot hoping to take it down right there, but I wont go into check/fold mode if the turn hits me at all i'll make a continuation bet of about 2/3 the pot more often then not I can get that pot right there. Now if i'm in late position with a bet pot sized or less in front of me i'm definetly raising in hopes of a free river card if i miss my flush on the turn this usually makes for an interesting situation because when the flush comes on the turn, a check will usually induce a bluff on the river by the villain, but when the flush misses the turn and hits on the river its usually not as easy to get a bet called so i like to fire out a half pot bet as fast as i can on the river