Yeah, not just concept arts. Even CAD drawings for buildings with different elevations never line up 100% due to scaling issues in the print, file or whatever. It’s something you get used to over time and learn to adapt as you progress in your journey. Eventually you’ll know how to pick one perfect match, even just part of a drawing, in this case say the screen, and then adjust the rest to that without losing proportions. As you say – practice practice practice. Rinse and repeat.