The Sorceress' Book of Magic has a pink book cover. But when Skeletor is reading from it at Snake Mountain and closes the book, it's cover is white.
Daimar the Demon is animated to have glowing eyes. But as he grabs Skeletors vehicle, the Basher, the glowing effect is missing and pupils are visible instead.
When Teela kneels next to the Sorceress, the background segment beneath her arm is given a flesh color by mistake. This is corrected in the next close-up shot. Then a few moments later, part of the Sorceress' orange wing is missing between her arm and head.
When Orko claps his hands after Skeletor is defeated, his ears are missing.