Just get yourself some sharp scissors, and cut your felt in the shape of the wallet, and add some closures-you can just use Velcro.
Then, get a nice design, and cut it out. These are your appliques
Sew up the appliques, using basic embroidery techniques.
Then, just fold up the wallet, accordingly, and stitch it up, baby!
There you go. Easy as pie.
Of course, as you can see, my wallet doesn’t look that perfect. The stitches on the side, are poorly done. But it’s not that bad for my first time.