You might want to practice this to see if it will work for you, but I'd work to the corner, m1, k1, m1 at each corner. For garter in the round, you'd have to knit one round, purl one round, so you'd have to m1p, p1, m1p on every other round.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry