See the diagonal design when they move the last number to the next row, then then and start over with 1 at the top. Sewing each row vertical. Row one then gets sewn to row 2 vertical until you get the size quilt you wanted.
doll quilts - Tutorial on quickly assembling those tiny squares into perfect blocks--this is genius, I would never have touched a square without seeing this, but they come out guaranteed to have all the corners match and are super quick. love this.