This was actually really hard for me because sewing things with right angles and exact measurements isn't my thing ( a friend of mine described it as "freestyle sewing" lol). But this tutorial made it pretty easy and while it's not perfect, in the end I was pretty happy.
This was also a great project to use up some of my fabric scraps and I used the same canvas plaid that I used for my purse exterior for the lining of my wallet so that ties together nicely. I wanted the closure to be a snap but could not for the life of me find my snap pliers and I was impatient to finish so I used velcro for now. Maybe I will replace it with a snap down the road.