Originally Posted by Jan in VA
Personally I think the randomness of the letters is a good learning tool, sort of a "where's waldo" kind of thing; I'd leave it as a panel.
You might make one narrow "stopper" border of white or black, then a border of random lengths of strips of fabric similiar to colors in this panel. A piano key border would work well, too.
Jan in VA
Make it easy on yourself, and just add some borders to make it the size that you want your finished project to be.