Design and Build an MP3 Player Case with Playing Cards

Step 3 Fold Cards for the sides, top and back.

Be careful when folding because getting if you don't get the crease right, it'll make your case look ugly. I recommend using other cards as straight-edges, comparing to your dimension sheet and to your actual MP3 player. Before folding the card, dig into it with a pencil, drawing a line across the card. If the playing card is plastic coated, this will make the fold cleaner and easier.

First you'll want a back piece that also covers the top of your MP3 player. This is going to be folded a lot. My MP3-player was about the same width as the playing card so this was easy. If you're going to be making one for something different, use great care cutting the card.

Then you should fold the side pieces. If you're using face cards, you might want to cut off the edges so that you can see more of the design in your case. Once that's done, use a pencil to prepare the crease and fold. It should start at the edge of the screen, fold once at the edge of the player, then cover the side of it and fold again. Use that one you have just folded as a template for folding the other side.