nice styling
Your style seems to shift and vary. This is a GOOD thing. It shows you are serious and enjoy art and you are finding your place for your own distinctive style. VERY good sign. Too many try to only copy others, which is ok for learning, but they don't grow from that and you end up with sticks or "madness" styles..stunting your own creativity. You do your own thing. VERY GOOD
Proportions look a little odd as does the position. I would suggest actually creating a stick figure layout to get the basic position then adjust that rig rather than starting over if it looks off. That's what the stick figures are for, that and basic understanding of animation as well. Then you build on top of that once you get a posi9tion that looks good. then you'd do an outline of the character, then trace over that and fill in with black...making sure the figure looks good and as a silhouette as well...again Photoshop can be used for this as well if you wish (or any of the freebie art programs out there)
You style on this one is simpler, therefore easy to read and is most suited to a animated design rather than just for a still figure. Perhaps study the poses military use and other anime mecha use and copy those poses. Especially professional photographs of soldiers in poses, or on the field. Often the Japanese animators and artists use much reference in real life to help bring life to their work simple as it is in style. All professional animator5s do this.
you get 5/5 - 9/10