If you're like me, you think that you're adventures are better than anything the big dogs publish. Do yourself a favor and invest a little scratch in a patronage project, I did (Open Designs' Lost City). Not only do you get to contribute to a published adventure, you get to experience how the whole process works.
Open Design's latest project is an adventure for Green Ronin's Campaign Setting the Freeport : the City of Adventure. The goal here is to combine a Swashbuckling adventure with supernatural horror. Sounds like fun!!!
If you'd like give this try click on over to Kobold Quarterly and check out the section on how patronage works.