I made one of these purses years ago. I still use it myself from time to time when I just want to carry something tiny like a debit card or some cash and chapstick. This year I made 2 more for Christmas gifts for my nieces. I have always downsized the pattern using worsted weight yarn and smaller needles. The pattern is quite forgiving and I think you have a lot of leeway with the sizes.

This project doesn’t use much yarn at all and you can finish on in an evening very easily.