A few tips for fellow knitters though:

This pattern is written as a straight needle method project. I worked in the round (on US 8 - 24”) and just ignored the abbreviations for WS and purl. Anywhere it says to purl, I just knit.

In the last row of your ribbing, I used the k1fb stitch every 16th stitch in order to increase by 5 stitches evenly. I’m terrible at the M1 stitch and always get small holes in my work when I use that method of increasing.

It’s very useful to place stitch markers between each pattern repeat once you start chart work. It kept me on track and it was easier to notice if I made any mistakes in my stitches.
Once you start Chart II, be very careful of the tension of your Contrasting Colour (the Mosaic yarn). I was using US 8 dpns by this point and my tension became very tight and the top started to pucker.

I also used another method of making the pom-pom for the top of the hat. The hand method used in this pattern made a very large and loose pom-pom. I made two small circles out of cardboard and followed that technique.