I need to get something I can make brushes with because redrawing freckles the same way every time is impossible.

Hair is always changing, especially when exposed to the humidity.
My characters aren't really all symmetric but my style is so inconsistent that it seems like it's being used as an excuse.
One of her eyes is slightly smaller than the other but how do I make her 'look weird' without making her look 'look weird'. Ya know?