I'd also like to help out. Email me at firstname.lastname@example.org. Not only webtoons, I'd also like to try some of the "tryouts" on naver webtoons - but then, I have no experience in translating itself, though I am a native Korean who's been living in US for over 7 years now (through middleschool-college). Talk to me in detail via email.
Thinking of branching out from webcomics to mangas. I'm considering of picking up a one volume, historical seinen. Unfortunately the only copy I have is in Chinese, so any Chinese to English translator interested PM me.