The copyright is on your creative expression. There is a ton of precedent on the issue of how much expression and creativity is required to assert copyright.

The copyright is on your creative expression. There is a ton of precedent on the issue of how much expression and creativity is required to assert copyright. One of the key questions is whether it is plausible that someone just accidentally duplicated the same thing, or if it is the result of actual copying. Given how iconic Mickey Mouse is, I would be shocked if white gloves and the exact color scheme weren't copyrightable.