First you have to cut the fabric panels in accordance with the size of the window that has been measured. Create a double hem on the bottom. After that you can create a single foldover also at the top. When cutting the fabric adjust the pattern or motif of the fabric. If you want to use the panel lining along the hem of the lining should be cut shorter than the fabric panels. Then lining fabric drapery panels and sewn together and hemmed. Interior Design.