Blue is a very playful and cute character, especially for a little witch.
I added a lot of angular and round/curly shapes in her design.
Her hat is very square at the bottom with a large curl on top.
The shape of her face and ears are more angular, while her eyes and cheeks are very round.
The hair is very straight on top, ending in a large curl just like her hat. Her clothes and nose are a bit triangular.
Her broom has a curve with thick branches at the end.