This pattern is worked as an adult size but can also fit a teen. If you decrease the amount of rows you work, it is also suitable for a child age 5+.
I did not have a gauge as it is worked in a triangle. You can change your hook size as you see fit.
I used 2 plus 1/4 skein of Caron Cakes in “Berries & Cream” to get an adult size so if you’d like a longer scarf repeat the pattern until you get the length you desire.