I really liked doing block 11. I liked the rows of chains across the block. They look like knit stitches, really cool.
Ch 25 (multiple of 2 + 1)
Row 1: sc in second ch from hook and in each ch across
row 2: (right side) ch 2, turn, hdc in first sc, *skip next sc, hdc in next sc, hdc in skipped sc; repeat from * across to last sc, hdc in last sc
Row 3: ch 1, turn, sc in horizontal strand of each hdc across (strand is just below the stitch that you would normally crochet into).
Repeat rows 2 and 3 to desired size.