This is a basic cat hat which requires mediocre skills.
If you do make this cat hat there are a few things to note.
1. This hat may not fit all cats but hopefully most of them
2. Please do not force your cat to wear them. Some cats will and some cats won't.
3. This pattern can be fully customisable, and you can add anything you want to it, as this is just a base if you want it to be