The Joker was done from a picture released of Heath Ledger as "The Joker" in the new Batman movie, The Dark Knight. Nothing much else to be said really. Done with a 0.3 Art Line pen, picture reference used (duh).
The image "Charcoal", was the result of me testing my new charcoal pencils. They work nicely. Her face came out wonky, but I managed to make her beaten up, so that it looked as if it was slightly superior planning, which it really, really wasn't :P Done with charcoal - haven't you been reading?!