I have used the binding tool and the process in the website above - but a friend showed me the quickest way for her was to just fold them at the angles so they meet, then press to set the lines, then match up the lines, sew on the line, trim and there it is. Not sure why I didn't see it before, because I was watching the videos over and over again, still would sew it backwards from time to time. Drove me crazy - I could not remember and would get it backwards, not sure why my brain could not retain their process, it just isn't that hard. So my friend has saved my sanity.