Pomp a doodle trim

Im knitting a scarf and thought that pomp a doodle would be cute at the end as a fringe or trim how do I do this??

I don’t use that type of yarn so I wasn’t even sure what it was so I looked it up. I suggest a larger needle…like a US 9 or so and just pick up the stitches and knit with the trim yarn. Not sure of any other way to do it.