Youve got a confidant looking little strut walkcycle going on there in this lil alien guy. The shading could do with being placed on the opposite side to where your light source is coming from tho (which is where youve placed the shine on his helmet), shadow should be under the face and to the left going by where youve placed this. The only things I would really suggest is to keep the arms in a similar amount of movement, the back arm at the moment swinging way to high (try to mimmic the front arms movement almost exactly, but on the opposite frames obveously). Apart from that the characters body could do with a sence of weight as he struts, try making him bob down one pixel when either of his legs come in contact with the floor. Also his body and head could do with a pixel rotation either way mimicing the legs movemet (if that makes any sence to you at all). A shadow would really help ground him aswell. Nice movement on legs and arms tho, the designs cute aswell.
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