Good, but not enough 
About balance talk Terley, you not to do this in you last edit (not entirely).
See on this edit for balance (red vertical line). From you she is fall.

Also see on:
hand - more thin, dainty.
breast - as tell you Luzeke. And up left side and a bit larger (nice woman - big bosom, but not milkmaid).
chest - smaller (man have big chest, not woman)
waist - higher
sacrum - higher
shank - bigger, too small (normal woman have long and beautiful legs)
calf - bigger and elegant, smaller toe and foot. And on you image foot stand on not gorizontal surface (slanting too much).

If you paint just for education, why not use pose more intresting for woman? Now she is ready to FIGHT (by frying pan and scoop)!
Or maybe paint more militant pose - about Amazon?
And forget nudity warning in name theme.
Please continue, you may this more better...

Very good!
About color scheme i like both )) Just first is more funny, but please put text into smog
I am mark pieces a red line, when in older version look it better, in my opinion.

The breast with stomach great nice playful line in blue-yellow, but in last edit you emphasize this line too much.
Me like his bone on shoulder and elbow - it's compatibility with his head, which crowned many bones.
His foot have more readability early (now too much shadow).
And scales in begin tail have intresting flash. And light scales (on yellow-blue) have flash look as reptile - it's good!

All comments about highlight it's right. Last you edit better, but still have some garbage on face and that give you problem with you light, it's look as bruise.
I hope this edit help you, I am not repaint you face, because it's your's )) just remove unnecessary pixel.

Now you may edit you form more correct - more cheek-bone, nose or something else.
And think about hair.  Dreads it's good idea, but realization a bit no good

nice ))
You may use this edit as you want. For animation search for keywords (animation walk) on this forum. Try to paint as did it some people and you take comments from people and crits - and you learned %).
And for the future, if you post naked person, write in title about this.

The Light now  is not  better  . You just put on this piece transparent white (or yellow) circle - is not light - is just fog. Light in underground is more contrast, in shadow you lose detail, in light you do more accent. And give him more radius maybe.
See on right side.

You may do this edit more better, it's just for understand you, what I mean!
And early lamp me like more then this variant, it's too huge.