kingsmash: 1, stop trying to animate fight scenes, stick with simple things like walking, jumping, a single punch, the ball test etc.
2, work on your basics. Physics, easing, smoothness and uniformity are all still missing from your animations.
3, Stop using my style, your far too new. Stick with size 2, its easier.
Devour: The trails looked terrible. straight trail only works for straight movement. What you need is curved trail.
Also the flip was too fast and had no easing. To remedy this try doing what I do; Start the flip fast then at the highest point, ease it down a tad, once physics kick in, tuck his legs in and speed it up again for the landing. Once he lands he will go into a crouch. then he can fall back.
poppet: as wobbly as it was it still look nice. However, what ever he was holding looked neither like a banana, or a knife.