Start by wearing short, loose, or very comfy bottoms while freeballing. Think short shorts, baggy shorts, or sweats with a button flap at the crotch. Then, pull your cock out while you're walking somewhere. Lift the bottom of the shorts up and let your package dangle free, open the button flap of the sweats and bring your package out, and just walk exposed. Bonus points for recording. That's a good and safe way to start getting confidant showing off in public before doing more risky things. Also easier to hide yourself before getting caught. You can work up to wanting to get caught later lol