Hello, and congrats on doing the 250 box challenge!

That was quite a piece of work, hah? : )

It's pleasure for me to admit the progress that you've made through pages. You've got the directions of the checking lines correctly, your boxes look believable, and your lines are smooth and confident.

Also, I can see you were abstaining from redrawing lines that go a little bit wrong. That is the nice thing too. Your pages mostly look clean and tidy.

The only issue that keeps appearing on the last pages is that inner corner, that sometimes just didn't sit. I have this struggle too. For me, it was helpful to change the order of making a box' sides sometimes, and go with the inner corner first, as is shown in this instruction https://imgur.com/a/DHlA3Jh. Maybe it could help you as well.

You could continue practicing box constructions as a warmup exercise, during working on lesson 2 themes.

Keep going!

You're great at this!