Here is my new style of wallet. It has lots more space, including a zippered compartment on the back outer and a pocket on the front which the tab closes over.
The inside is the same as the older style. I must say this was an experiment and things usually go wrong with my experiments. First I sewed the back on upside down and had to unpick it all and then as I was doing the topstitching I broke my needle (shattered is probably a more appropriate word!). But I got there in the end and I'm very pleased with the results.