nanna-up-north

I'm making a lap quilt of my own design and have the middle done. It measures 40 1/4" x 43" at this point and I do plan on adding another 1/2" band of black. My DH thought maybe it should be 1" black. Anyway, I could add an outer border of the green (does 7" wide sound about right?) or I could do something else.

I'd really love to hear what suggestions you have for this. It's going to be a sampler for the needle-turn classes that I teach.

Thanks!