i dont practice gfx or anything like that, but i think you should use blender instead studio, and bend the limbs that way it looks better (great job though 
)
I do use blender though 
This looks really cool, maybe make the left arm a bit closer to the torso and the Lightsaber not colliding into the arm. Can’t tell if that’s the thumb but yeah nice! 
The arms look disconnected from the torso/ shoulder. I don’t make renders but the quality might need to be fixed as well.
I like this,i just think the background is kinda low quality,but yea i think that the rest is really good
Hi! It’s a neat icon, however, you should be using the rig to bend the limbs. You know, give it a more action-ready character? right now it just looks stiff and almost as if the stormtrooper is just standing there with the lightsaber.
The swirl around the character feels a bit out of place. ik it fits the color scheme of the stormtrooper but it just looks like you put the character on the swirl. Idk, maybe the red outer glow ruins it.
Overall, neat picture but has a couple of noticeable flaws. Keep it up
you should try to learn it as its free to use, also will benefit you in the long run if you plan to pursue Graphical FX
Still needs a bit of work though, for example the background layer doesn’t suit a star wars theme as its just black and white. Also I hardly watch star wars movies/shows but I don’t think clone troopers should hold lightsabres but this was just my opinion but as always their is room to improve.