you know when people show a film and they have some part cut off like when:
you are holding a piece of paper but the hand part doesnt show because you did something to the film to make it look like the paper is flying.
How do you do that?
http://www.google.com/search?q=draw+cells+to+make+motion+picture&rlz=1C1GGGE_enUS379US379&oq=draw+cells+to+make+motion+picture&aqs=chrome.0.57.18498&sugexp=chrome,mod=1&sourceid=chrome&ie=UTF-8
At least one of these websites should help.