cut the repair pcs of carpet to fit with the grain going the same way. You may have to go to a carpet store and rent a carpet iron and buy some carpet seam tape. Cut the tape to fit the seams and heat the iron and glide the iron alnog the tape between the tape and carpet Sa the cglue on the tape melts position the carpet in place. The people at the carpet store will tell you and show you how to do it. Good luck.but just take your time to get a good fit and seam that no-one will see