Last year the best I could do was apply a base of the colours I was using in eyeshadow and then paint the actual lipstick over to blend. However, since I will be at a con, I will be drinking a lot, so even with precautions like straws, it tends to come off rather quickly. Also, lots of people will be taking lots of pictures of me and it's not really feasible to carry a bag to put all the makeup required for the look in and do touch ups as much as I would need to.
Is there some sort of makeup artists' trick that I don't know about? Please help me, I love this costume and want to look great, but I can't be primping the whole con when there's so much more to enjoy! Thanks guys!