Don't change the way you play if its been consistently profitable for you in the past.maybe try a different casino for a bit so you are a fresh face and people wont have a read on you.
Also don't dress like a poker player. Dress like a gambler. Dress like somebody who thinks its a good idea to play the power ball. Talk about how you love to chase straight draws and flush draws. If they think you're a gambler they will call you down. This is a good thing. Just pay attention to the board and pay attention to your opponent for tells
. If a possible straight or possible flush comes up and they change their posture they probably have it. Sympathetic body language (like they are sorry that they are about to take your money) usually means they have a monster. If you don't think they have it, and they think you like to chase flushes, you can represent the flush.
You don't want to be taken seriously, you want them yo think they have an obvious read on you even though they dont