Another speed pain for the Sketch of the Day in CGTalk forums, this one was called "Mad Doctor", this one took a little bit more than the other but was a really cool topic and very entertained to do. The time of the challenge was 55 mins, took me more so I have 2 pictures again. Post your comments at the end of the post =D.
"Mad Doctor" Challenge
55 mins, PS CS3/Wacom:
2h41 mins(161 mins), PS CS3/ Wacom: