I have managed to iron all the squares and sewed in the ends on all of them but one. I found a lonely one I missed in the bottom of the bag. I'll deal with it, eventually. Today I sewed up one 'cube' of mitred squares. It's about all I can manage at one go. Getting the stripes to line up is,um, fiddly.
This is the 3rd square out of quite a few that I have sewn up. Onwards!