Often I would get complicated assignments like this animatic which was done for Saatchi NY. These frames had many moving parts such as arms, heads, lips as well as eyes. Sometimes I used to wonder how they were ever able to film this stuff and make a rational TV commercial mockup out of it all. Many of these frames were rendered rather large, some 20" wide. I don't believe that this is the complete set, but these are all I was able to find and are enough to give you an idea of the complexity of the assignment which was done under the usual tough deadline conditions.
In this elevator scene the Art Director wanted flashing lights and numbers to indicate the elevator movement.
A few of my preliminary sketches for the small heads needed.
Crazy stuff to figure out so that it films properly.