Well, size isn't a really big factor in any cosplay I think. If you look at my Zack, who's about 6' 2" ish, I look alright, or at least I think so. Yes, there's a reason I say that, I'm about 5' 1"-2"! I would mostly concentrate on makep to give a manlier look and binding if you're big chested If you think height is ABSOLUTELY necessary, try platform boots. I have a pair for my Demyx cosplay and it gives me a good four extra inches. Hope that helps!