Here's my Jester Hat Pattern - I've done my best to explain it, it's not terribly difficult but do holler if there's anything that doesn't make sense!
The Pattern is the same as the Innocent Hats to a point, but I'll start at the beginning anyway...
You need Double Knit Yarn with 4mm needles - as with all of the Innocent hats!
Cast on 28 stitches.
Knit two Rows
Start with a knit row and K1 row, P1 row for 12 rows (it's the same as Innocent to here, and then we get jester-ific)
On a knit row - Cast off 1 stitch, then you will make the first "point", you need to knit the next 6 stitches, turn and purl these 6 stitches, turn and k2, k2tog, k2 (5 stitches), turn and purl, k2, cast off 1, k2 (4 stitches), turn and purl, turn and k1, k2tog, k1 (3 stitches), turn and purl, turn and k1, cast off 1 and k1 (2 stitches), turn and purl, and then turn and cast off the last 2. That's the first one done. Phew.
For the next three "points" you will follow this pattern...
Join yarn back in. Knit 5 stitches, turn and purl, knit the five again, and turn and purl them (this is because of the distribution of stitches and the amount of rows from base to tip!) K2, cast off 1, k2 (4 stitches), turn and purl, turn and k1, k2tog, k1 (3 stitches), turn and purl, turn and k1, cast off 1, k1 (2 stitches), turn and purl, then cast off the 2 remaining stitches. Remember to do this for three of the "points".
For the last "point" you just need to repeat the first point pattern.
So now you will have a flat hat and some wobbly triangles attached. This is the point where you stitch up the "points" - do not turn it inside out, just stitch neatly along the edges of each point. Then stitch up the hat, this can be done on the inside edge. It looks odd, and there should be a hole in the top where the hat hasn't been shaped in the usual way, but this is easy to fix, just run a stitch through and pull tight. I also added bells to the ends, it weighs down the points and makes it festive!
I hope this isn't too complicated... I'm sure it's a long way to do it but it's how I made mine!