I posted a game character a couple of months back and realized I wasn’t happy with my skill level in rigging and weighting. Long story short, I was having such a “good time” with rigging and weighting that I decided too much of a good thing was too much 
(I did learn a lot though and intend to apply it later).
So I went back to modeling.
Still have loads of things to do but I’m off to a good start on what I had in mind.
Nice start.
The hat looks oversized. The hat-band is generally where the hat rests on the skull, so it shouldn’t be too much larger than the circumference of the top of the skull. With the typical witches hat brim, you might need to tilt the hat back a bit, too, so her face is visible.
Thanks for the feedback @Orinoco.
I actually made the hat deliberately oversized for comedic value. Your right about the hat band, I kind of just modeled the hat from memory alone with no ref image, one of the many things I’ll have to tweak later. As for the hat position, I’ll be making shape keys or adding a bone (or both) for control and animation later in the project.
Well for some reference material try this for a start: https://www.google.nl/search?q=LITTLE+WITCH+ACADEMY&rlz=1C1GIGM_enNL532NL532&espv=210&es_sm=122&tbm=isch&tbo=u&source=univ&sa=X&ei=ojO_Uur4Cu6X0AWIxoHYDg&ved=0CDgQsAQ&biw=1825&bih=797#imgdii=_
Its little witch academy. A kickstarter anime. There are some nice reference pics, and yes they drew the hats oversized as well for artistic reasons 
I guess I should have made a distinction between the size of the hat and the size of the hat brim or the size of the hat crown. Since hats are worn on the head, the only size that matters is the size of the hat band, which is the part that fits on the head. The rest of the hat can range from things like ball caps (close fitting crowns, small incomplete brims) to sombreros (dome shaped crown, large brim rolled up at the edge) to mortarboards (skull cap crown, brim moved to the top of the hat) and many other variations, including the classic witch or wizard hat (tall pointed crown, large floppy brim.)
If you take a close look at the Witch’s Academy hats, the hat band generally fits the character’s head, with a small allowance for hair. Everything else is an artistic or costuming decision.
Well thats the most interesting study I have ever read about witch hats. Glad I could be of help.
