Thanks for all the tips man, will look it all over:)

 The preview is NPA change it and I believe it'll get in.

 Great job, definitely can see some improvements. :)

As for making things pop out, complementry colours could be of use, they do in gerenal allow for maximum contrast between two colours, but obviously don't use them out of the blue, use them only when what you're making allows you to(i.e; it would look really weird if you made the background orange, but her skin light blue [unless there is another lightsource that is blue).

Aside that, I think you should've reused some colours in your palette ramps to allow everything in the scene to look more "close" to each other; especially at areas where light would be reflected from nearby objects. (considering the atmosphere looks redish orange, I would expect her skin, and the creature's skin for example, to look much more redish orange than that).

And also, if I'm already speaking about atmosphere. Assuming that this is in cave, and there aren't many lightsrouces, the scene should look much, much more darker than it does now.
I think I can see a river of lava in the background? if so,  this would first mean that it should be much more brighter, and also, have some reflections on nearby objects (taking into consideration of how far they are and how close they are, and how strong is the light source itself).

Yes, also, this does have a lot of banding and could use a lot of clean up.  There's a lot of pixel noise too especially around the face.  What you have so far is great, but needs an extra go round of polish.  You did really well in doing the chains.  There you have shown the power of the pixel.  Other places, not as much.  Definitely work on this some more.  it'd be a shame for such a piece to not be as good as it could be

Cool, like going from warmer to colder?

 I would try some hur shifting or colored lighting and shadows for the skin 

Gruesome.

But there are some problems with anatomy and such.