I think this is a great, great idea. First of all you come across as very sincere and genuine and the organization of the video is effective, it's concise and you hit all the right notes. One thing I would suggest is that your work doesn't appear connected to a great game.
I would suggest perhaps making a TF2 asset or something where you could communicate the transformation of your piece of art into the game world. That would be an effective addition to what you have here, IMO. Other than that, I like the idea and I like the initiative.