I'm going to do this
http://www.quiltingboard.com/posts/list/19232.page this evening with some of my blue and whites. I loved Chele's so much - and the pattern tells you how to do prairie points all different colours - I've never done them but always wanted to! Here they're between two borders, but I guess if you want them at the very edge, you'd pin in the same way to the edge of the last border, on the right side, then sew on your binding instead of the outer border - but I'm prepared to be corrected!
I'm not sure yet if I'll use the same fabric or not for the points on my blue and white - but if I do, I'll try this method!
K x