Hey there. Nice fixes, I think you did a good thing by lessening the tilt of her back.

My first tip is to work on a background of 50% grey (or thereabouts). Effects like gradients are not promoted by the pixeljoint community, but other circles are fine with it. Whatever the case, applying effects halfway through your work is not a good idea. If you realize you need to make a significant change after you've drawn a lens flare, you don't have many options other than completely redrawing everything. So keep flares and gradients out of this post!

Colours... You can simplify. A lot! Don't use colours for materials--don't have a set of greens for grass or plants, have some greens that you can use for anything--even the lighting of a grey rock, or part of a glowing blue gem. That can cut down on the amount of colours you use a lot! So why do your colours ramp to white, but not do the same thing backwards to another colour? It saves time and energy to have one final shadow tone and one final highlight tone to string things between.

Another thing is how you draw things. I have a different style and method than you, so this is purely an example for reference.

I made the hair higher-contrast, so it wouldn't blend into the skin too much. This way, the two tones that get placed next to the skin are either the lightest or the darkest, which show up fairly well. Note also how where at times, there were places where the shirt's colour could be used to smooth out the hair. Reuse colours. It just helps.

Happy pixelling.