Wetsanding This Week After my Car got Spraypainted

I'd put some acetone on a rag and try to wipe it off. As mentioned earlier go easy, it could also remove your paint depending on its vintage, but the spray paint should come off first, just check a small spot first. Same goes for glass and chrome, acetone should cure it. Most spray cans run enamel so acetone should work better than thinner. I'd try to avoid wet-sanding if possible, you'll have to buff that afterward. Depending on how thick the spray paint is, you may be able to buff it off too, which saves you the time wet sanding.