Thank you! It's been a long process and I'm still learning and evolving. Makeup is so key to cosplay. I have a list of some of the cosmetics I use on my website. [link]
Mainly I make sure to keep up with my skin before a con. I use Say Yes to Carrots face wash and apricot scrub, and a heavy duty face and eye cream every night. I use Loreal's pink "magic" primer, I forget the name of it! Then I apply my foundation with a sponge, apply some concealer where I need it, and let it dry. Then I add blush, eyeshadow, eyeliner, false lashes, and use Maybelline's Fit Me powder all over in the lightest shade. I also define my features/jaw etc. with a shading powder, Ben Nye makes a good one. Hope this helps!