Good
The animation is good. It is smooth and well animated throughout. The smoke effect that is used could have been a bit more detailed, as it doesn't look quite right in the spots where it is used. It also looks a bit awkward when Scotty gets off of the couch.
The audio is good. The music is slightly repetitive, but matches the tone of the narration well. The rhyming narration adds a bit of comic relief to everything that happens. The audio levels of the narration and characters could be tweaked a little bit.
The plot is good. For an introduction, it's fairly interesting to watch. It keeps the viewer entertained, foreshadowing the possible events of the full short film.
The full short film will likely be well received. Perhaps you could upload it to Newgrounds when you're done entering it into festivals. Even if the file size is too big, an administrator will probably up your limit upon request so you can submit it.