1) The lace pattern as written is to be worked in the round. Working flat will cause the pattern to not line up correctly. Between rows 6&7, and again between rows 14&15, move the beginning-of-the-round marker to the left.
2) In the decrease rnd section for the crown shaping, rnd 2 is missing. It should say, rnd 2: Work sts as they appear.
2) Page 90
Petite Shells Edging
Row 2 should read as follows:
Row 2: (WS) P3, yo, work p1, yo, k1tbl all in next st, p1; rep from to last
2 sts, p2–st count has inc’d to a multiple of 4 sts + 6.
1) The RT and LT definitions are wrong. They should instead be defined as:
RT : Skip 1 stitch and knit the 2nd stitch, then purl the skipped stitch, then slip both stitches from needle together.
LT : Skip 1 stitch and purl the 2nd stitch through back loop, then knit the skipped stitch, then slip both stitches from needle together