Oooh, I like this - and the fact that it's flannel makes it even better! How warm and cosy. Looks like your outer border is the same as one of your patch fabrics...I like. How was the flannel to work on? What are you doing with it?
Since I'm not a machine quilter, I, myself, would do the long diagonals in the ditch. Not creative, but it do a good job.