Logos
If you feel the logo for a team is the most important visual element, group several jerseys in the same frame with an emphasis on the logo. Fold each jersey several times until the only thing visible on one side is the logo. Set each folded jersey next to each other under a large frame and pin them carefully in place. With larger logos, you can usually fit four or five jerseys in a frame.
Names or Numbers
If you want to show off just the names or numbers of the jerseys, fold them so just those elements are showing on top of the folds. Organize the folded jerseys side by side and set them in the frame. The jerseys will be displayed length wise, so they will take up more room from top to bottom in the frame than using the logo method.
Overlapped
Lay the jerseys completely flat inside a frame. Fold in the sleeves on one side of one jersey and set it as far to the side of the frame matting as possible. Then fold in one of the sleeves of the second jersey, and lay it on top of the first, so that about a half of the first jersey is showing underneath. Do the same with a third jersey.
You can also overlap them from the top or the bottom, depending on the parts of the jersey you feel are the most important to showcase.
Autographed Jerseys
If you have autographed jerseys, you will need to make sure the autographs show. Any of the above methods will work, but will depend on where the autograph is. For example, you could overlap dark jerseys where the player has signed his autographs within a white number.