I have been playing around with my dark blue squares, seeing what happens if I send them in different directions.
I quite liked this, but for the moment have gone back to working through the orginal plan, building out the top right hand part. As I work down from here, those blues may go down again, or they may keep going up.
Piecing is a bit easier now as I have reached a straight edge across the bottom, so I'm going to make one more big piece and then join them, instead of dragging the whole thing to the machine every time I need to add a couple of squares.