Yarn doubled.

Actually 3.35mm hook (size 1 steel) because I’ve misplaced my B hook. I’m compensating by crocheting with a higher tension than I normally would.

Changes:

1. Replacing the last “ch-5, sl” with “ch-2, dc” so that the end can be easily woven in as I work the square that joins.
2. At first, I tried to make the corners all connect rather than how it is written, but then I discovered it looks better the way it is written.

Conveniently, the correct square width is equal to the display part of an iPhone screen.