Great picture+Great profile= dating success!
Picture: I would always do 4 pictures (Or more if I could!) Two face shots from a few different angles and a few full body shots again, different angles. Always dressed up for a family function, a night out with the girls.. what have you. I was 300 pounds and knew how to work my angles.
Profile:Play up your positives! Don't forget to mention you're plus sized (never go into exact weight!) Some dudes can be...not bright and not realize you're plus, even though your pictures obviously show that you are. Keep it upbeat, fun, lively and interesting! You have one chance to catch a guys attention, Be the profile that stands out among a sea of other women!