Positives:
Colors generally good, particularly the skin tones of your model. Unusual portraiture that provides the viewer something to think about when looking at this composition. Good moment to capture for an occupational portrait. That is its greatest strength.
Technicals:
Though you went to a lot of trouble to setup the lighting the results in this particular image did not work out as well as it might. There is brightness and some overexposures on the makeup man's fingers and the model's neck plus there is a harsh shadow across her face and her nose sticks out into the bright light. Not very flattering to her.
The Challenge:
Hard to say how voters reacted to this image in relationship to the 'Still' topic. Some probably thought there was more implied motion than implied stillness and voted you lower because of it.
Suggestions:
The DOF on this image was very shallow because of f/3.2. Since you are using flash I would recommend a higher f/number for a wider DOF though you certainly do not want or need the entire image sharply focused. Though I don't know how you would do this, adding more lighting to her face might avoid the harsh shadow line. Adjust lighting and/or exposure to avoid the bright areas on the makeup man's hands and model's neck.
Interesting colors in this shot and I like the catch lights in the models eyes. Normally I don't like when a subject is looking out of the frame but the model is looking at the makeup artist so it adds some nice "action" so to speak. A little overexposed particularly in the hair and the neck. Were this in advanced editing I would clone out the stray hairs.
Fits the theme; nice composition and I like the red of the dress, the black of the shirt and the whiteness of her skin. Attractive model. It may be an illusion but her eyes don't seem as sharply focussed as other parts of the photo.