Expression: Anger

I like to draw one of my D&D characters who is unfriendly and generally threatening. Anger is her resting face. I was looking for reference images and was happily reminded of this site where I can filter to get exactly what I need! These were set to 10 minutes but I didn't send the full time on all of them. The top right is the best of these as far as relevance for my character. The facial structure is what I imagine for her, so this will also help me define what she looks like; her face is different every time. The model also happened to be wearing a button down collared shirt which is what my character wears so that was bonus practice.