Take your comforter off of the bed. Lay the cover out on the bed with the opening at the foot of the bed. Find the top two corners of your comforter (the top being the part that will be up near the head of the bed), and put the two corners together. Now put those two corners through the opening in the bottom of the cover, and push it inside the cover until you get it to the top. Now working from the inside, match the left top corner of the comforter corner to the left top corner of the cover, then repeat with the right top side. Now grab the cover from the *outside* at those corners, so you're pinching the comforter through it. Holding both of those corners in one hand, pull the rest of the cover down around the rest of the comforter. Finally, grab the cover and the comforter at the top and give it a lift/snap a few times so the comforter settles and distributes evenly throughout the rest of the cover. Now button/zip the bottom of the cover and you're done. It's kind of a pain, but it gets easier with practice.