You can wait like a week and then it well just peel, or fall right off... Theres really no worries once it dries...
Go to your local drug store and ask if they carry adhesive remover! I know there is such a thing, my bf works in a hospital, and brings it home time to time if we have band-aid marks etc. usually does the trick! Good luck!
hahaha, that always happens to me (and what ever im glueing never gets glued). i just pick it off and after awhile its gone.