Cool looking comic; however there are two things I think are warranting work and an area you may want to review. The first thing I notice is that the designs are very reminiscent of Naruto, and I’m not sure if this was intentional or not. That isn’t inherently bad, just thought I would point it out since you may want to look into the character designs and try developing unique features for each character to break free from that niche.
I notice that the poses have little to no planar perspective, by which I mean, I cannot really tell which direction in space they are actually placed. It as it they are all posed straight at the metaphorical camera, and only the joints move on an axis but are without proper depth. I think this illusion is partially being generated by the block colouring you have got going on, maybe you could look into screen tones to apply some minor shadows or something, or when you are in the gestural phase really make sure to indicate the wrapping lines of the limbs and indicate foreshortening/overlapping appropriately. My last point is that you may want to look into panelling theory, however I cannot elaborate since I don't know much myself about it :/