This pattern gives instructions for both bandana and shawl.

Sizes
Bandana
Approx. 120cm (47in)wide x 51cm (20in) to point
Shawl
Approx. 140cm (55in)wide x 71cm (28in) to point

Pattern errata
There is a ‘yo’ missing on all RS pattern rows from row 15.
There should be a yo after SSM, K1, SSM, on every RS row to make 4 increases every RS row, either side of the 1st & last stitch and either side of the central stitch.
I hope this helps, sorry.