I haven't quite made my mind up yet where this is going, so I have been working on two fronts. First off I made a few more of the big blocks. This is my favourite.
It is very clear that if I want to make many more of these I will need to add in extra shirts; I can only get two or three of those big curves out of a shirt before I have to start piecing bits back together again. I'm not ruling that out but in the meantime I have started making smaller blocks as a way of using up the weird leftovers I was creating.
I don't know how/where they fit into the scheme of things yet, but it feels like they will come in handy at some point, and they are kind of satisfying to make.