Here's the template for the no-sew gnome hats.
The template I made is approximately 4" in diameter for the brim. The top of the hat is approximately 7" high. Hopefully that will give you a reference if you want to scale yours up or down!
How to use the template
Download the image onto your device. Then input it into a word document. I sized mine as large as it could fit within the margins of a regular piece of printable paper. If you do not know how to do this, here is a link to a tutorial with full details: (74) How to Insert Pictures in Microsoft Word 2019. MS Word Tutorial - YouTube