Felsir,
Thanks, that's the kind of advice I was hoping for. I agree...I didn't quite like how her face and some of the darker areas (under armpit, lower part of hair, etc.) were Turing out. On my next piece I'll do the color reduction and then make my swatches from the original image. Now that you mention it, it's obvious that would make a much more accurate vector image. That's why it's so great to get good feedback from the masters...it helps everyone's artwork improve.
Congrats on your twins, by the way. We just had our second in April so I have a (very) slim idea of what you're going through. I hope everything turns out well with them!