Need A Witch Hat?
Spoonflower, that on-demand printer of custom fabric, has created a DIY witch's Hat pattern that you can download and then sew up of whatever fabric you choose:
DIY Witch Hat Sewing Tutorial
Stand out in your Halloween costume by making a custom witch hat! Create one for yourself, and the rest for your ‘ghouls’ following our visual tutorial.
blog.spoonflower.com
The hat pattern can be found here:
Witch Hat Pattern (Free Download!) | Keiko Lynn
Download a free witch hat pattern and print at home! Sew your own DIY witch hat for your halloween costume.
keikolynn.com
Naturally this is a very simple and very basic witch's hat.
Pinterest has lots of ideas for many different styles of witch's hats should you want something more complex.
Best of luck with your hat!