What should my last carved pumpkin be?

I’m going away to college next year, so I expect this to be my last pumpkin to carve. I’m looking to make my own pattern, and I’m looking for something that is horror like and very difficult. Pennywise the Clown is a top contender, but I didn’t know if anyone could think of anything better. Any suggestions?

Also, does anyone know of a website that will convert a picture to plain black and white for the pattern?

Thanks.