While you are going about your winter preparation tasks this September, you might be in the mood to tackle that big hole in the drywall that you haven’t gotten around to yet. The DIY Network has easy, step-by-step instructions on how to repair seriously damaged drywall that will show you how to: cut out the damaged area, cut out the patch, attach cleats to wall studs, fit the patch into cleats and studs, apply fiberglass tape to the seams and finish the wall surface.