Hello! I like the concept and the look you are going for. Like you, I tried to go for a kicking pose but I found it to be kind of difficult to make it work! If it helps, what gave me some ideas to make them work was watching anime fighting scenes. It sounds silly, but why not draw from the experience of talented animators and their sequences to get some ideas.
I am aware that the end of the challenge is near, but you may want to try to add some more elements to increase the severity of her fight. The helicopters are a nice touch, but why not having them shoot towards your character? Just throwing some ideas out, but it works for a) letting the viewer be aware that this is a fight, there are things at play, and it is not just a girl jumping around. b) leading lines that help your composition, all those bullets are a nice and sensible excuse to play and push the composition further! Same goes with feathers, enemies, all the nice things you got going on in there.
Hope that helps!