Well actually, I didn't really know how. My friend Safira and I wanted to throw one (our birthdays were in September), so I just made a bunch of moustaches. There even was a PIN THE MOUSTACHE ON MARIO game. So here are the pics in Instagram (yeahh I'm one of 'those' people now). Oh and thank you Safira for all the delicious snacks (don't have pictures of those, we ate it all too fast)!
So there you have it. How to throw a moustache-themed birthday party. x