Help with turning pinwheel pattern into spiral tube shape?

How-to Questions
1

Does that make sense?
i have been desperately trying to find a way to make a one piece bag.
i tried an envelope type bag using the magic cast on method, but find its not so "different"
i tried altering the cast on, but it looked funny so got scrapped.
i am trying to do a circular bag now, starting with a basic pinwheel for the bottom, but want to make it into a “tube” of sorts for the bag’s body.

i started w/ a 5 st cast on, so have 10 pinwheel panels. my last increase round in the pinwheel was yo, k9, around followed by a full round of k. For the next round i tried yo, k2tog, k8, around, but it left the open st for the yo too open, and it looked funny. is there a place in the 9 sts that will be knit that i can put the k2tog w/out it looking wonky? or is there another st i can use to keep the yo and open st, but not make it increase?

TIA
Courtney

2

You could try k2tog, YO, k8 to see if that makes the open stitch smaller, or use ssk, yo/yo, ssk. Other way: knit the YO tbl on the next round; wrap the YO the opposite direction which can make them smaller; or do a M1 by picking up the strand between sts, but knit it without the twist - knit it regular.