Crochet Shell Stitch Video Tutorial
For this stitch will will need a multiple of 6+2.
For a baby blanket make a ch of 134.
For an afghan make a ch of 158.
If you want anything bigger like for a queen size bed then make the ch longer as long as it’s a multiple of 6+2, then measure it on the bed.
Repeat the pattern for a length desired for your project.