You’re free to use 3rd party Artwork/Music/Audio assets, or assets you previously created, but we ask that you OPT-OUT of the respected voting categories (Graphics, Audio). You can opt-out of a voting category when you submit your game.

So if i personally create artwork beforehand, do i still need to opt out of graphics, even though its my personal work? Because it would then be 1st party, and not 3rd party.