Emmet Brown from Back to the Future Part 3

this is the first pen portraiture I've done without laying down a pencil foundation first. Soo there may be many errors in it, like things not lining up or inaccuracies but all well. I looked at two to three references and it's supposed to be, as the title states, Emmet Brown from Back to the future. I actually went to a convention in the summer and Christopher Lloyd was there, so I gave him the picture. Annnywhooo.. luckily I was smart enough to take a photo of it before it was sent away forever! *memory saved* I just recently stumbled upon the picture again while looking at other pictures so I thought I'd put it up. Anywhoo, hope you enjoy it.