We start off by collecting the materials:
That's all you need, just vinyl or leatherette or leather. All are magnificent.
Start sewing with:
3) Between the center, remove a 1/2" x 2mm.
Which will look like a chimp at the bottom of the bigger vinyl (picture).
5) Sew the right bottom part of the big vinyl over the smaller vinyl.
6) Likewise pull the smaller vinyl to the left, use some clumps. Leave a quarter inch space, do not cover the bigger vinyl. Then sew the left bottom of the bigger vinyl over the smaller vinyl.
8) Sew the sides of the wallet. The bigger vinyl sewn over the smaller vinyl.