Here are some notes for the bigger LEGO overshot project:
Project Stats
Warp: 12/2 cotton in plum
Tabby weft: 12/2 cotton in plum
Pattern weft: 8/4 cotton in aqua
4 yards at warp board
Sett is 20 epi on #10 reed
52 threads per repeat, planning for 6.5 repeats plus 24 threads each side for borders = 385 threads total
19.25" at reed, or about 15.5" across after a possible 20% shrinkage.