Decided to spruce up my room with a new DIY duvet cover!
First, you take two sheets (I bought two sheet sets from Homegoods) and put them right sides facing each other. I did start out by pinning it, but found that they got in the way and made the corners not match up. So I just free-handed it!
Then sew around three sides leaving the top open. To find out where the ribbons would go, I spread out the duvet on the floor and placed my comforter on top of it. I placed it in the middle leaving about 5 inches on each end (the sheets ended up being longer than the comforter, I didn't mind because then it would cover more of the bed skirt that I detest but haven't gotten around to changing). Then I pinned the ribbons in place.
Lastly, (duvet cover still inside out) I sewed closed about half way of the open side.
Finally! Put your comforter inside of the duvet! You may have to crawl inside to tie up the corners ; ) For now I am leaving the half opening the way it is. Maybe in the future I will close it off with buttons or snaps.