Ah, the chance to revise, what a double-edge chalk. One advantage/disadvantage (circle correct word) of working on a series of drawings is that you can go back and modify an earlier attempt in the light of a later drawing. I’m verging on the edge of that infinity loop of possible modifications. So, to stop that, here is one drawing complete(ish). Now that you have seen it, I can’t change it any more (or something like that). Please hold me to this!