This was really good Austin! I think you nailed the lighting and the animation of the mooshroom, and everything else was very smooth - it felt just like a scene from Minecraft!
If there was anything that you could potentially work on, perhaps it would look better if the mooshroom was more in focus (either when it moves out of frame/set the aperture so that it focuses on both Alex and the mooshroom)? It's probably more to do with personal preference, but it might be worth experimenting to see if you can get it to work. I would imagine it would be easier to do the former of the two options
I can't wait to see your upcoming future projects and I hope that I'll be seeing you around BiM more!