Reraise on the flop to get flush chasers out. The rest is fine, except preflop. Calling a 4xbb raise preflop with 86o is as foolish as calling a 4xbb raise preflop with 8To. This is the poker gods punishing you for that call. Print this hand history out and put it next to your computer and write "I will not call 4xbb raises with junk". You will save yourself money in the long run.