I have painted a new external hardwood door and done a first coat of gloss but it needs a second coat. I am bit confused though. There are a few bits and dead flies that have settled on the paint work, so from looking at other posts I think I should wait a week or so for it all to dry and then sand the bits out. But do I just sand the parts that have the bits, I won't need to sand the whole door will I? I've wondered about this on window sills and doors where they might get bashed. Is there a technique for 'repairing' a small area of glossed woodwork?