The resting color is carried up to the next row.
Always wrap the yarns in the same way to keep an
even braid along the wrong side. Always slip
stitches with yarn to the wrong side; i.e., with yarn
in back on RS rows, and with yarn in front on WS
rows.
You may find it helpful (as I did) to use stitch
markers to keep track of repeats.

Gauge
20 sts and 40 rows = 4”/10
cm in garter mosaic pattern,
after blocking.

Final Measure
17”/42.5 cm wide x 69”/172.5 cm long.