I'm painting an American flag on the inside of my garage door. The garage door is 7ft by 16ft. I saw a sheet of possible dimensions i can use but none where very close. I know it's a little long but is there anyway i can give the flag slightly longer stripes or something to make it fit the door? If so whats the best way to do this. Also the door has 3 support beams and 12 hinges that are a galvanized steal. I was planing on painting the 3 beams but haven't decided it i should paint the hinges yet or not. Any opinions on that?