Just do whatever gets you the best grade for the demo reel. I really like the inside view of the creature, something different, but pulled off really nicely. You have enough content that I'd remove anything that was done with a team (so just show off the dinos and plants)
Super work man, I love your stuff. I don't think you'll have a problem landing a job after you graduate :) As for demo reels, I guess it depends what your target is. Do you want to be a character artist? Show your characters and creatures (posed if possible) in turnarounds. Animations would be cool but not required. If…