Dude I love this. It's short but amazing. I had to listen to it at least three times to be happy with myself lol. Even afterwards, I had to watch the video because I had to see it being done. I love every bit of this, and it reminds me a little of a piece called "Ruins Theme" from this game I enjoy called Slime Rancher. My only qualm that I would have with this - which is not major at all - I would have loved to see it end the way it did but in the D major feeling it gets around 0:30, but even still I like the ending as it was.
And about the fiverr small piece creation thing you're doing - I love the idea. Personally, I can't wait to see how you take ideas from people and make them into things like this. In all honesty, I would contribute to this if I could. I can't wait to see the pieces that emerge from the ideas that people give you :)