I have used Craigslist for the first time. I was pretty skeptical at first. I was able too sell a big chunk of my Magic Collection and I scored me a sweet gaming rig! I am now a huge fan of craigslist! Haha
In my short game, I'm going to make the alien speak Klingon since that is the closest thing I can think of for an alien language. Think about it, would aliens know how to speak fluent english? I doubt it xD Haha
The right kind of creativity is adding your flavoring and layering on tested and proven tropes, not tearing them down and rebuild things in your image. Just like how you don't cook eggs with a brick or a chainsaw, but instead learning on how to make your eggs look good and different than the other eggs.