Not really expecting much comment on these, but anything is welcome. My lines are improving as I get a bit more practice with the pen, although I still have a bit of problem thinking of where some of the lines should end when drawing boxes, so I overshoot sometimes. That's probably just a matter of experience, and the 250 box challenge should take care of that in the end.

Going to need to revisit the Rotated Boxes exercise after I get the challenge done, at least for my own satisfaction. I drew it much too small, and I'm pretty sure I added an extra box at the lower left that shouldn't be there. But that won't be for a while.