Judging by your two animation, I'll just give critique on both of them. The punch animation extremely smooth, but just be careful on how smooth you make things, even for 30 fps. Making things too smooth can make them somewhat boring. It was also somewhat jerky but hey, its 30 fps, I probably wouldn't be arsed to do that. However it does show you have understanding of easing and I did like the small 3-d.
For the Jannu animation, I think I start seeing a more defined style. You seem to have this heavy spacing going on which I enjoy seeing. You definitely made some of the hits powerful and the numerous back flips was fun to watch. However, the beginning could have had an extra frame or two, possibly flow the movements a little better and at the end the arms just went still.
Overall I think everything is solid for a beginner. It would be nice to see more animations (Y)