I usually wear a sweater along with jeans and my boots and whatnots (exactly same outfit like when I take a day flight), and I do not have makeup nor contact lenses on when I'm getting ready to fly. I usually have my pillow blown up and my earphones in from watching a show or listening to some music.
When I decide to sleep, I just kind of... close my eyes? No routine to be honest; I could easily stay awake if I want to. I'm just rather good with sleeping anywhere.
When I wake up, I brush my teeth and put on my contact lenses and stretch a bit. Makeup is not always something I bother with.