Let's get to it:
Step 1: Cut your fabric. The outside, lining, and batting should all be 6.5x5 inches. The ruffle fabric should be 3x8 inches.
Step 2: Sew the outside and batting together. Measure up 1.5 inches on the top and bottom and sew a line. This will help keep the batting in place when you use the case.
Step 3: On the ruffle fabric iron the long sides in 1/4 inch.
Step 4: Sew on the ruffles in the center of the outside fabric.
Step5: This is where it gets a little tricky! You are going to make a sandwich with the zipper on the inside. Place the outside fabric face up and lay the zipper face down on the top of it. Then add the lining fabric face down and sew a 1/4 inch seam along the edge of the zipper. Repeat with the other side.
This is what it should look like after you have both sides done. Make sure to open the zipper about halfway.
Step 7: Fold it right side out and stitch up the hole in the bottom. There you have it!