Thanks for the replies. I’ve just completed PC engine/TG16 previews (419 previews). For these, instead of the game box I used the Hucard for the preview image as I felt this would look better than the square jewel cases.
These are actually custom images as finding a good quality and complete source of Hucard scans wasn’t possible so the ‘labels’ on the Hucards are actually scans of the box art. Although this isn’t 100% authentic I think it works well and in most cases is very similar to how the actual Hucards look.