/fa/ - Fashion

step 1: be tall
step 2: be broad shouldered
step 3: wear any semiformal/formal clothing that is tailored and of decent-high quality
step 4: have properly currated accessories (watch, belt) to show you have your stuff together
step 5: practice proper speaking and body language/posture

there you go, you can probably get away with not being tall if you are built and have good posture

you can also skip a lot of these steps if you are naturally charismatic