honestly...just go to every shop in your area and try them all on until you find one that's perfect. you have to have them on your face all the time, don't settle for something you might love/get used to after a week! and try not to go alone/have someone to FaceTime- I like to bring my sister for an honest opinion.
avoid online try-ons- and if you have anything out of the ordinary, avoid any online companies. Warby Parker messed up my prisms real bad. if you don't have a lot of time on your hands, use the Warby Parker feature where you can order them to try them on and return them, to find out what shape you want!