Based on Spider-net trimming, with pretty edge, with these changes:
See also v3, which uses yo, p2tog faggoting along the right edge.
yo, p2tog
Shown with a cast-on count of 16 stitches.
1 2 3 4 5 Horizontal repeats
1 2 3 4 5 Vertical repeats
Swatch photo uploaded by jcbriar