This is a basic pattern for my Jacob's Wheel Kippah design that will fit an adult man. The use of the double treble stitch gives texture to the otherwise simple kippah design. The kippah can be made longer by adding SC rows once the crown is made to .cover the main circumference of the head.
Counting stitches is more important for this kippah, so be sure to have several stitch markers on hand to keep things even and straight.
If you haven't made a crocheted kippah before, I would suggest you try my pattern, Plain Kippah Crochet, to get used to the tight stitching that makes the shaping of the crown.

(TBH, I sell sets of plastic locking stitch markers in my Etsy shop, merlinMN. I find them to be extremely important for all my crochet work. They are safe for all fibers; no snagging, splitting or breaking. Lots of different colors.)