This looks so cute and is the same size as the kerchief I made earlier.
I used a shawl pattern and added 25 chains each side for ties. Here is the shawl diagram.
For the edging do last row like the rows in between the shells. *Ch 3, sc, ch 3, sc*. (Like the row before the shells.) Then do a 2nd row of single crochet.
For the tie area, do 3 rows of sc in the back loops. Finish Off.
30″across, 9″ length