I just folded it into three, used my corner rounder on one side of the card so that you get a peak of what is in there. Stick down the other single left hand side so the voucher/money doesn't slide out.
I used some ribbon from my stash and a handwritten sentiment matted and layered onto mirri card and used some red thread to put the sentiment onto the wallet card.
Voila - all done. Now all I've got to do is find the money!!!!