Definitely needs a lot of work, but keep up with it!
I'd recommend this pixel-art walk tutorial: http://www.manningkrull.com/pixel_art/tutorials/walking.asp
His feet look more like they're shuffling rather than him walking. The arm being back also makes it look odd.
Você por aqui XD
Pra alguém que faz pixel art há alguns meses, você tem uma boa noção de animação o_o
Dá uma olhada nesse tutorial de walking cycle quando tiver tempo - me ajudou muito.
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For someone who's been pixelling for a few months, you've got a quite good animating skill o_o
Take a look at this walking cycle tutorial when you have time - it helped me a lot.
Seems choppy to me, and in the middle, he kinda swoops to the side oddly.
I think it happened during an error in perspective xD, and the question of going back and arm a feature character in the anime!
Anyway I will train harder to avoid mistakes, thank you for strength!