Pattern changes:
1) Cast-on in purl, 96(72) stitches at 4.5 sts/in.
2) Three (two) rows of knitting above and below the bobble row.
3) Two purls rows above bobble row to better balance cast-on plus one purl row below.
4) Crown shaping will be 4 CDDs every other row starting at 5” from cast-on, every round at 48(32) sts. The resulting ridges look cool on a viking hat.

I attached the horns using a crochet chain in the gray heather yarn.