wow great tips Eliste! I have indeed begun to stitch, and have taken on board your pro-tip. I have no scrap material available at the moment, I'll have to see if my relatives have any, A bag would be a good idea to keep it dust free. I have started on this piece in the middle, mainly as it was easier to work out for now (plus I had forgotten how much extra I had added to the sides to work out where to stitch 
)Indeed the biggest challenge is how to prop it up comfortably.