Are you using a hair net or an actual wig cap? From what I understand, wig caps do a better job keeping your real hair hidden and in place. Also, not sure if you already know this or not, but using bobby pins to clip the wig to your hair and wig cap will ensure maximum hold. Careful though because if you get TOO good at doing that, you MIGHT have to end up taking mild pain killers because when I was cosplaying with wigs, my hair was pulled so tight to hide everything I got headaches xD
Umm, and not sure if you are using contacts for your Cosplay/costume, but this is the site I go to for most, if not all, of my contact needs.
http://www.pinkyparadise.com/
Also a quick coupon search on Google can help you save a little more on your purchases.
Unfortunately no experience with Henna, sorry D:
Oh, one more thing about drawing stuff on your face. Hairspray. It fucking SUCKS when you first spray it on your face and feels NAAASSSTY (to me at least) but it REEEEAAAALLLY helps to keep any stuff from smudging and/or rubbing off from accidental bumps or a little bit of sweat. Like even when I was BALLS DEEP in heat at Anime Expo, everything pretty much stayed in-tact.
Umm, and not sure if you are using contacts for your Cosplay/costume, but this is the site I go to for most, if not all, of my contact needs.
http://www.pinkyparadise.com/
Also a quick coupon search on Google can help you save a little more on your purchases.
Unfortunately no experience with Henna, sorry D:
Oh, one more thing about drawing stuff on your face. Hairspray. It fucking SUCKS when you first spray it on your face and feels NAAASSSTY (to me at least) but it REEEEAAAALLLY helps to keep any stuff from smudging and/or rubbing off from accidental bumps or a little bit of sweat. Like even when I was BALLS DEEP in heat at Anime Expo, everything pretty much stayed in-tact.