FOTD: mardi gras preparation

tomorrow i'll be at a mardi gras party - i didn't know how to costumize, but i knew i wanted to try to paint a mask with lots of glitter.
because i have never done that before, i wanted to try it out at least once as a dress rehearsal. i will have to hurry a little bit tomorrow, because i still have to work and all the family stuff so i didn't want to do it unprepared. this i just slapped on over my existing make up, i taped my face and went on as it goes... and that's how it will maybe look like ;)

i also found a cute clutch in a lip shape today, so red lips will be a must to go with it.
i used Benefit Creaseless Cream Shadow in Strut as a base and then a lot of blues, greens, yellows and purples out of my 88 shimmer palette (luckily i have it -  i knew i would get more use out of it one day ;)  ) my biggest concern still is the staying power, with all the sweat and my oily skin - i don't think a normal setting spray such as MAC Fix+ will do. should i try the hairspray-method? but maybe that'll look greasy... is hairspray actually very harmful for your skin?
some falsies would be nice, maybe i can stick some rhinestones or feathers on the upper edge. but i'll definitely have to change the shape a little bit.

i will wear a black lace dress with a black tank-dress underneath, black tights and bright green velours heels. my hair i will tease up to a biiig scraggy pile :)
no real costume, huh? but i didn't want to dress up with the costumes you can buy.
so i think i'll go as somewhat like a (mysterious) slutty woman...
what do you think? some advices?