@terrymatz @ramsey @sundogplanets
To make it as a muffler/neck-wrap you would have to choose a number of stitches across, then eliminate the increasing and decreasing used to shape an armhole.
It needs to be 2x longer but narrower than a sweater.
drawing the design on a graph paper would help decide what needs to be trimmed off the sides to keep the key part of the idea.

You have a choice of using a smaller yarn weight to get a smaller sized picture with more of the sides showing. That means choosing the right needles too.

The design doesn't need to be repeated on the other side for a man's scarf.

Finished the edges well to keep the scarf from curling.
Fringe the ends.