There's a lady called Mizusora and she can make your fan fiction into webtoons if you are selected as the top five winners. You do not need to give her a full story, she's just looking for inspiration:)but if you are, it would be good if it's just about a chapter:))

http://www.asianfanfics.com/story/view/1225767/webtoon-shop-graphic-oneshot-romance-snsd-exo-webtoon-bts