nice ones cappuccino,
I like your animation style and follow through.
About the walking cycle you have, I like the detail of the hair moving and the "flow" of the animation, My only pointer is that when you walk you turn your torso a bit to the sides on the opposite direction of the legs, you can fake it moving the arm layer a bit to the front (if you made it in layers).
It is not a critique, just a thing to think about, I think you made well, I can enjoy watching the animation entirely.
about metal material, You can have it studying materials in pixel art, normally metal has reflection (colors of the environment in the material), refraction (A darker tone, mostly seen in chrome) and specularity (highlights of white in the material). You can achieve good results with anti-alias where it is needed (if fits the style), and gradients.
google walt disney 12 principles of animation, it will be a good source of study,
It works with all kinds of animations, even pixel art.
Last edited by dengue; Feb 7, 2018 at 01:54 AM.