This pattern can be made in sizes toddler and up
I used just under 3 balls of grey and 1 of the mint

This pattern can be made in any thickness of yarn

Free written pattern can be found here
http://www.crochetwithclare.com/across-the-line-shawl.html

The video tutorial can be found here
https://youtu.be/gsE3nc6BzGA