Scribble Portrait - Drawing With Passion

I usually don't draw portraits like this, but this young man's face had so much depth and character so I was compelled to do a quick detailed drawing of him.

It's a scribble portrait practice of a long headed man with mean expression.

With no initial outline sketching, I squiggled round the paper with my pen giving it a definite shape - from the blank sheet something noticeable started surfacing.

Until it becomes quite clear what it is.

Thank you.