I think your inking and cell shading is really great! The gold hue really pops against the dark background, and your line weight variations really communicate an organic quality to the whole thing!
I wonder if maybe the the circle and rays radiating from it in the upper right don't somehow contradict the direction of your lighting coming from the left. I say that simply because the subtle (maybe unintended?) implication is that it's a moon or something that is radiating rays that might be interpreted as moonbeams, maybe... If that's the case, I'd urge you to deepen the shadows and bump the highlights a bit more because it looks like, to my eye, that he's been caught in a different cast light source coming from the left and staring down whoever is carrying it. I wonder if you push that source of light to be more evident, the less powerful backlight from the apparent moon might help it seem less contradictory. Does that make sense?
The great jungle leaves behind him really help set an atmosphere of being in the dark because they seem so shadow and windswept. It's a lovely impression! Well done!