You drew all that with a ballpoint pen? Wow. This is just so... amazing! The whole picture, but especially the lips & eyes, looks so real! The hair looks very realistic too, but perhaps a little less blue could improve the quality of the overall picture. The swirld of blue and black add a nice effect to the art. The shadows and highlights are almost perfect, adding more realistic detail. The only thing that I think could possibly be improved, other than what I have mentioned already, is the skin on the neck - it looks a little sketchy, but other than that, this is an extremely good drawing,considering that it was all drawn with ballpoint pen!
You have a beautiful style! When I look into those eyes, I get lost in whatever Han Solo is thinking about. I'm not just saying that because I'm a HUGE fan, this work really is fantastic! You must have put a lot of time and effort into the shading and depth, because it looks very realistic. Aside from the face itself, the background is original, yet appropriate to the character. The only thing that really looked out of place was the ear; it doesn't have much detail like the rest of the face. Plus, you might want to consider lessening the size of his "adams-apple", it was just bothering me. But that's your call, so whatever. You have a great style, plus your technique with a pen is amazing! Very original, I've never seen anything like it. I really like his smirk, it looks just like him. Great job!