Lollige, I like the upper side of the body, I can feeling he is dancing and having fun, but the legs have no sense at all for me... Do the test. Block the upper side, and see the legs, alone. They look like the hypnotic movements of soap in a bubble... Nice, but they have no sense. Do the same in the stickman... It' s even worse, actually.
I would give a new look to the legs. There is a gym machine that do the movement I would look for and matches with the movement he is doing with his arms... I can't remember the name, but it' s simillar to this one:
But not really this one. This machine does steps, or "stairs walking". There is a machine that makes your feet move left and right, in circular movements, like when you are winning speed when skating.
So, one of the extreme movements of the guy, should look more or less like this (Very rough edit, though...)
Hope it helps...
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I come here humble, trying not to repeat the mistakes of the past, for improving my art and try to help the others improving their own when I can...