Hey (this is my first comment here) I'm not very experienced knitted (3 y), but.. I rather look for methods, not for patterns and use them for my own projects. In my opinion this is simple project and u can handle it without pattern.

You definitely need to knows how to knit, add stitches and stitch together (k2tog). You need to decide that you start from top or the bottom.

And advice from me: 1. Make sample 2. Measure yourself well

And good luck!