Yoshi is very right about that. As for me, though I have never tried writing for webcomics, I have been working on a little fiction and I come up with vague story arcs for existing franchises very quickly, comes in handy for RPs. Like the New KH RP, they were discussing what they should do storylinewise. Then I came in and bam, I said
Me, teh awesome wrote:t could be a completely independant plot from KH. It could be say... several thousand years after Sora managed to save the world and what not, but mysteriously, the heartless started springing up again. Our characters, meeting by chance join up and try to solve this mysterious enemy from which they've only heard in myths. They battle it out until they finally come to the climax and find that... well something plottwisty.
I admit, it needs some work, but I think it's pretty good for ten seconds.