Did you know that Kumoricon offers both a panel on Webcomics and a webcomic contest?
I'd encourage you to participate in both.
The Webcomic 101 panel is very popular & is run by Catboy Trades of "Catboy at the Con", in the Creation Station.
The Webcomic Contest is part of Creation Station's Fanfic Contest. Manga are also accepted, as are doujinshi & graphic novels. Perhaps most importantly for you to know, we accept works-in-progress. So please feel free to submit whatever portion you already have finished, as a webcomic-in-progress. You have until the Saturday of con at 9pm, but the earlier, the better. Send to firstname.lastname@example.org
along with such info as your full name, badge name, forum name, email, phone #, age if minor, ratings level (as if it were a movie or manga) of the content of your work, & the names of any people collaborating on the project with you, along with your affirmation that they consent to your entering the shared work in the contest.
Hope to hear from you!
Creation Station Manager.