Try adding some shading

I think it would look cooler if he was actually wearing the mask

UPDATED IT, ADDED SOME SHADING INTO IT

there is no shading on the mask

CriticaI wrote there is no shading on the mask

where about on the mask should i add it ?

Looks better, perhaps fill in the body to make it look less lonely? 7/10

That's a really lazy shading job.

It should at least go as far as to the line of the right side of the nose.

Under the left eyebrow could be shaded.
Inside the ear could be shaded again.

Plenty of places to shade on the mask...
At least the bottom part.

The white glares in the eye are bad.
They don't match, yet they're from the same light source, yes?
The one in his left eye is too big.

What is that large black lump on the top of his head?
He hould maybe see a doctor?

UPDATED ADDED SOME MORE SHADING TO IT AS PEOPLE SAID TO, IF ANYMORE NEED ADDING JUST COMMENT WHERE !