How to add hand drawn animation over a video?

Hi,

I am hoping to add hand drawn animation over video footage. For example: Hockey 101 on Vimeo. I understand the way to do it is adding it frame by frame? However this seems like a long process and was hoping something slightly quicker as I do not have long to do this project. I am no expert in after effects so please help me understand the best way of achieving this.

Thanks in advance.