Bed anything that moves, drink too much, do drugs to excess, be stupid.
Enjoy role-playing this out.
Oh, and follow the crowd. Most UK guys don't care if their skin tone makes them look like a citrus fruit or their hair makes them look like a Nazi German Soldier from the 30's.
Edit: oh, and also, if you're male - tart yourself up more than a girl getting a full makeover and hair done. Take longer as well... then don't forget to hate every LGBT guy for being effeminate even though you could pass for a Panto' Dame.