Of these three, #1 is my clear favorite. I like it's composition and the pose - you were able to get the "I'm a makeup artist" elements of the brush and mirror into the shot without obscuring any of the subject. Her position, while clearly posed, still manages to look relaxed (as compared with #2, in which she looks stiff). The lighting here is less harsh than in the other two. The only spot I'd take another look at is the back of her brush hand (the fingers holding the brush are borderline blown out, it's tough to be sure on my monitor here - but it's nothing you can't burn a bit if needed). I also like that you can actually see her eyes in this one. Oh, and I wouldn't worry at all about it being a bit soft in focus. For a makeup artist you want to convey the feeling of soft, smooth skin. Look at it from the point of view of a potential makeup artist client, not as a photographer.
I'm not as big a fan of #2. The composition seems a bit off to me - why leave that much space above her head yet just nick off her right elbow? The lighting is a bit too uneven; her brush fingers are again blown out, along with her cheekbone and clavicle, while her mirror hand is underexposed. I don't like that you can't see her eyes. I'm sure that she is elevating her face to the light (good!) while trying to keep looking in the mirror, but the effect I get is that the light was just too bright and she's squinting. I'm also not a fan of the background and how some areas are distracting (the blue rectangle coming out of her head, the bright white spots over her right shoulder).
I go back and forth on whether I like #3, or rather how much, because overall I do like it. Here too I wish I could see more of her eyes, it would have embellished her smile. I'm finding the lighting here just a bit unfortunate as well. The wall behind her seems to have a very interesting texture, so when my eye is drawn to the blown out spot just beside her face the lack of detail there is emphasized. And the angle of the lighting is creating an unfortunate shadow...with her hair up in the bun and the light catching her profile at that angle, I'm seeing more of a boy in the shadow (or, frankly, a monkey, but that might just be because I've been watching too much Escape to Chimp Eden lately). In general I might also add to watch out for the slouch, but in this case I like the relaxed feeling it adds to the pose.
Overall, nice work. Would you put up one or two of the selective color images (you've already disclaimed that it's not your preference, so hopefully you won't get reamed too hard for it)? I'm curious to see it from the MUA's preference. Except for the lipstick, which stands out, the rest of the makeup in these shots blends very nicely and looks natural. I'd assume that's the image you want to convey as an MUA rather than having it stand out and seem disjointed.
The only thing that bothers me a bit - the first photo is a little soft.
