There is actually a ton that can be done with make-up in cosplay... people rarely realize just -how much- of a difference it can make.

When my friend was going to do Seishirou to my Subaru, he asked me if I'd ever seen anyone do the job perfectly. I pointed him to you. You didn't look like -you- as Seishi, you looked like him. Just get into character when you where there clothes, feel like maybe you are the character, and their movements and dispositions will come to you. That's what helps 'make' them.