For your first animation, this looks fairly good, I really like the way you've added different effects, such as lighting and fire for different stickmans and made them utilize that, looked pretty nice.
I think you should work a bit more on like the general art style, the animation was fine, I liked the effects as I already mentioned, the movements were nice as well, but the scenery looks a bit bland and kinda messy, I would proably work a bit more on the colors and details, but other than that, the rest was alright :)