I was looking for a leak in my attic and accidentally stepped off the beams. I cracked the sheet rock( I don't even know if that's how you spell it) anyway it didn't crack completely in have just enough to look bad. The crack is about 3 feet long. I was wondering if I could fix it by sanding it smooth and maybe putting some of that tape stuff on and then painting it? How's that sound? Or do I need to replace my ceiling?