This is the kind of stuff I need to do more often. Characters interacting, events telling a story, not just presenting a character and saying "look how pretty/strong I am". The poses are great and the write up is well done too.

Proportions are all over the place though. The prone woman looks significantly larger and taller than Jhazira; not sure if that's what you were going for but it caught my attention, as did the hands. I don't know if you do this or not, but I get the impression that you drew the hands (particularly the leader's hands) out of your head with no reference. A little practice can go a long way, and you have the perfect reference material available whenever you want right at the end of your own wrists.

I'm glad to see you're putting a some shadows in your work, but just remember that the size and depth of shadows depends on the light source in the scene. Just off the top of my head, the shadows on the defeated leader should be denser than those on Jhazira because she'd be more distant from the light source. Not only that, but Jhazira herself should be casting some shadows on the leader, and shadows are never truly black. Use a dark blue blended into the colors; if your software doesn't have blending modes, try using lower opacity.

I think you could have put more effort into the background details. I find that things like foliage and other natural terrain elements are pretty hard to get wrong; you don't have to rely on perspective or measurements, but you could have done a lot more than what you did. Take a look at some real life or photos of trees and bushes and simplify what you see, but add some detail to them. Some lines for the dents and breaches in tree bark, some more defined shapes for the leaves that make up bushes, some rocks and gravel drawn by hand instead of a simple texture on the ground; these things can go a long way toward improving the visual quality of your work and all it takes is a bit more effort.