ooo.. so, where can I find the clips?? :D and yeah, that's why I'm really interested in this thingy after I watched one.. haha

A lot of people find clips and pics that they think is related with the topic and help bring out the feeling of the story.
Putting it together and editing it is the tricky part. You have to pay very close attention to make sure that everything goes smoothly, that it's easy to understand and not confusing, etc.
It's a lot of work but in the end when you see the finished work, it's all worth it.^-^