Revealing mistake: As Ganon is making off with the Triforce of Wisdom, he looks back and sees Link and Zelda catching up to him on horseback. He yells "Blast! They're coming!" He then looks back forward. Watch closely, as he turns his head, the Triforce, which is neatly tucked under his arm, randomly jumps out of his hand for a couple frames, and then goes back.
Revealing mistake: Ganon goes on a monologue rant after the bird reports to him. There is a half circle design on the front of his helmet just below the front spike. As he moves and says the word Triforce, that half circle vanishes and then comes back. It also did this before only a few seconds earlier. All in the same shot.