you will need at least 2 contrasting colours, For mine I used stylecraft special Dk in blue, and cygnet kaleidoscope both from my stash.

You can change the size of your hat, but the difference in size will be quite big. if you only need a slight difference try using a different size needle.

There is a chart but please don’t let it scare you off.
if you need any help I am here or can be found on facebook Woolenbits and crafty friends group.

I recommend using stitch markers in my patterns that I get from Jessie’s crafty hands also on facebook. This is my daughter, who is autistic, and the reason I have the time to knit, and the inspiration behind a lot of my designs.