I don’t know if this is the problem but one of the things that is easy to forget is the repeat.
Because you begin the repeat with k2tog 3 times and end it with k2tog 3 times, the repeat through the middle of the row becomes
…-(yo,k1)6times,—(k2tog) 3 Times—(K2tog) 3 times-…
Effectively you’re knitting -(yo,k1)6times,—(k2tog) 6 Times-
If you forget to work the k2tog 3 times at both the beginning and end of the repeat, that could throw your stitch count off.
How many sts do you have across the row to begin?
Here’s a video for Feather and Fan just in case that helps: It uses different numbers but the stitches are the same. Ignore the numbers and use the repeats of 3 or 6 as in your pattern:
Shar, you’re going to get this to work. We’re all here to help you.