How could I push this ?

[Jonas Jerde]

Looks pretty cool so far, I would bring it all down a little on the canvas so his head isn't cut off at the top. Also, His eyes don't seem to have the same perspective as his nose and chin do. I would either make them look like they are pointing upwards or downwards, because right now they are kind of just looking straight (which might be fine if it was a square canvas).

Some harsher/darker shadows might be nice along with some brighter rim lighting. if your painting in black and white it is important to accentuate the lights and darks because there is no color to break things apart.

Hope that helps.