Well, this might come in handy...
This might be the time to give the foundry a try if you haven't already, and if you require help or knowledge then feel free to ask and I will try help to the best of my ability.
Just a quick run down on the main requirements:
-one entry per Author, must be new quest (easy)
-include the Cult of the Dragon (easy, just plan for them to be included)
-adhere to Foundry EULA (easy, just stick to D&D, don't add people from Star Trek or Warcraft etc. and don't make it too "sexual")
-average duration of 15 minutes or more
That last one will be what makes or breaks your adventure as a contender. The only way to get that time balance right is to play test a lot, which means actually having something to test BEFORE you submit your finished work to the official thread. Doing too much of one thing for 15 minutes will also lower the enjoyability so you'll need to be smart!
As a slight bonus: Your mission will get plays, even if it is just from other contestants gauging the opposition. That is one of the hardest things when making a mission - advertising and spruiking it, so it's best to take advantage of the official spotlight while you get the chance as foundry contests do not come about very often!