Nick, I'm not the SC, but as a site regular I'll try to lend a hand. I can see that your question was your first post, so I assume you're not accustomed to using forums yet.
Wouldn't you just want to make a new post under the Iowa Tournaments section? Get your info together - like format, date, time, cost, freebies, payouts, and post them up. Look @ other tournaments in the "iowa tournaments" section for an example of what to post.