This is a project that I found on the Bernina blog.
All of the letters I used were purchase from Embroidery Libary. There are tons of pretty fonts to choose from so if you are interested just take a look and pick three. I looked for large sized monograms that were approx. 6" tall.
I did use stretcher bars in two sizes - 12" and 28" and used some wood glue in the joints because I saw that tip on another blog. The only thing holding this up is 3 thumb tacks in the wall. Light weight, easy, and a handy reminder.