Skin Idea: Interstate Twitch
Unfortunately, I can't make this a concept because I can't do the artwork myself but here we go.
Picture Twitch in this 70's interstate theme with a big afro, wide disco pants, comb, golden ring and chain, sunglasses, you get the idea here probably. He should be a gangster like Disco dance-off type kind of crook (the get down) who stacks disco balls instead of casks. Maybe his q should cast some kind of disco lights around him on the floor and give him a sweet dance move when he goes out of stealth and on using his e the disco balls should explode like fireworks. His w could be a dance-mat like in dance-offs with the black and white blocks on it. I know I'm not supposed to laugh but picturing this really makes me do, his ult should be him in a pimped up car doing a drive by. Even if it was half a car or just a seat, wheel and car door that should be quite awesome.
Some music for flavor: https://www.youtube.com/watch?v=xN_3nib4r3Y something like this should be on his ult as well.