I finished my GFG this spring. I had trimmed off the edge to make it even. Then I staystitched around the quilt so that the seams doesn't open up. I then extended the same color (Cloud fabric) as a border around the whole quilt top. Then I had a border consisting of a fence. If you just want to finish the edges here is a video on and uneven binding technique.
https://www.youtube.com/watch?v=lwPe_84GBfY