Samus Pixel art[WIP(?)]

[Afelium]

I tried doing Samus from Metrioid to practice shading,I'm looking for advice;the light on her left shoulder doesn't look right,what's wrong with it?

Edit:
Slightly changed the shading on the shoulders

[Tensur]

I tried to edit because i really like the art, i'm noob in pixel art but maybe my edit help u.

[Afelium]

I tried to edit because i really like the art, i'm noob in pixel art but maybe my edit help u.

Thank you very much!you may not consider yourself an expert in pixel art(I don't know if you are)but sure you found the exact problem that I couldn't see:the banding on her shoulder(that thing is called banding right?).The shades were all the same size,so I guess that made it feel wrong.
Thank you again,you really helped me

I tried to follow your edit,but by keeping the roundness of the shoulder

[Hunited]

Actually, although that is not banding, it is what is bugging me on the right shoulder as well, still.
Banding is when you line up pixels in a way that creates a perceived line.
Actually, what you described is banding too, itīs just that in pixel art jargon it means something else.
example of banding

[Afelium]

Actually, although that is not banding, it is what is bugging me on the right shoulder as well, still.
Banding is when you line up pixels in a way that creates a perceived line.
Actually, what you described is banding too, itīs just that in pixel art jargon it means something else.
example of banding

Thank you for the explanation

Actually, although that is not banding, it is what is bugging me on the right shoulder as well, still.

Do you think my last edit has resolved it?Or should I work again on it?

[Hunited]

It's this part especially, but if I'm the only one, then don't worry about it.

[Afelium]

It's this part especially, but if I'm the only one, then don't worry about it.

I don't know how light exactly works,but here's how I think it could have worked

[Hunited]

Well, although light does propagate in straight lines, you're not really looking at Samus as a 3D object in this way.

[Afelium]

Well, although light does propagate in straight lines, you're not really looking at Samus as a 3D object in this way.

I don't know how light would work in this situation,I tried to make the helmet's shadow more  evident

Edit:
here comes the body

[wolfenoctis]

I think you need to fix the proportions before you start shading, an edit to illustrate: