I remember reading an article that discussed data collection, and how companies could tell if someone was a top programmer based on their anime / manga consumption. (From my memory) there was either a specific series that they viewed or a particular website. I have not been able to find the artic...

I want to make a manga with my one idea, but I'm not good at drawing figures! Is there any graphic application I can use to define my characters, then change their figures and take a snapshot to create my desired scene?