Make your pattern. My customer gave me some dimensions for the gun he was making: 4" wide at top, the sides 1.5" wide, 8" tall, and tapering down to 1.5" at the bottom. I knew I didn't want to have too many seams on this since Syaoran's looks pretty smooth in the picture. So I decided that there would only be one seam in the center back. So I had to do some math: for the top, I needed it to be 4x2 and 1.5x2, which equaled 11. Then I added 1/2" for a seam allowance on each edge, bringing my total width at the top to 12". Then I measured it out at 10" tall, allotting the 1/2" seam at the bottom and a little extra at the top. After that, I measured for the bottom to be 1.5x4=6. Then again, adding the 1/2" seam allowances to both sides, bringing me to 7". I then tapered my lines to meet from top to bottom. After that, I sketched the curve around the top since his holster doesn't just go straight around. I then cut that curve out, using the heavy vinyl as my template, sketching half on the back of the orange vinyl, then, flipping it and sketching the other half. I did this twice. Once that was done, I used the green vinyl template to cut out the piece that would be the decoration on the holster.