Basically the central lace pattern is the same for all sizes, but the number of stitches for the foundation chain differs- by multiples of ten stitches either side of the lace panel.
Row 1: (RS) 1tr in third ch from hook, 1tr in each of next 23 (33, 43, 53) ch, 2tr in each of next 2 ch, [1ch, miss 1ch, 1tr in next ch] six times, 1ch, miss 1ch, [1tr, miss 1ch] five times, 1ch, miss 1ch, [1tr, miss 1ch, 1ch] six times, 2tr in each of next 2ch, 1tr in each of remaining 25 (35, 45, 55) ch, turn - 89 (109, 129, 149) sts.
Row 3: (RS) 3ch (counts as 1tr)... Please note that at the end of row 2 and subsequent wrong-side rows you work the last dc in the 3-ch of row 1 or 3. This should give you the correct number of stitches. On right-side rows, make 3ch to count as 1tr, do not work into the stitch at the base of the chain but instead 1tr in each of the next 25/35/45/55 stitches.