Alright, well. I do like your interpretation for the word prompt. It isn't one I'd thought of! I think you did a pretty good job choosing colours and putting them together. (Also, I laughed at the clever signature placement.)

I do think you could have taken a bit of time to clean up the lineart of the strong blue highlights, but it isn't too big of a deal. I think mostly, with the lineart, you would have benefitted a lot by colouring the sketch/lineart to match the colours of the picture more. I can see that you've done it a bit, but it is a bit overbearing on the lighter areas, like the chest and her gloves, and you might have tried varying the colours there more, too. It is especially like this by the lips. The colour of the lines completely overshadows the red of her lips. The blue highlights seem especially messy on her legs and hair. Tapering it would have helped tons, I think. Varying the width of it would have also helped to build some more 3D to her body. Varying lineart width would have been great, as well. thicker where you wanted to add weight, or bring it closer to the viewer, etc.

I do also have a few anatomy critiques:

I find her nose to be very distracting. The shape of her eyes and face are lovely, but there isn't really a whole lot of structure to her nose. (Oh lordy, noses. I've been doing a lot of studies on noses and attempting to paint them. It helps, but they're tough stuff!)

I do like the angle of her face, and the long angle of the neck. It does add to her stature. However, I think that the slope of her shoulders could leave up higher. The angle they are at right now is almost straight across. You can see them leading straight into the collar bone. Women's shoulder slope down a bit from the neck, and don't go straight across. I know we don't see that entire line of the shoulder, but we do see the line of it begin. Changing that angle, and maybe moving the collar up would change the illusion of the neck being quite so long, I think.

I notice that you haven't shaded with greys and whites. Good job branching out into colours further, Mike.

Good luck with the rest of your 100! (Though I see that you've finished 2 already. I'll get to that one sooner or later, too. )