Well, she's angry.
I wonder what she has seen to deserve a reaction quite like this? Being a school teacher, she probably had enough, when the kids fed the class pet frog to the chickens, or something like that. Of course, it could be the case that it's something innocuous, like the third child that morning who has accused the dog or eating the homework, so she has just hit TILT and exploded.
A decent level of detail, with furrowed eyebrows and a lot of creases across the dress. I'm glad that you told us that the subject was a female, as there is no body shape to indicate one way or the other and curly hair could apply to either gender.
I'd like to see a little more in the way of background - perhaps a school scene, that is faded out, as the red mist has descended with this image of a hastily roller-coated rouge over the background. It could give a more devastating effect.
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