Use the full extended art in card styles not mirror the interior art of the card
In all the card styles that you can earn with mastery pass or buy in the store that are borderless and have a 'moving view angle' impression. The art part that is there instead of the border is mirrored from the interior of the card. I know the art for magic cards is created bigger than is depicted in the cards. My suggestion is to use the real art instead of mirroring the interior..