I suggest not adding this category onto numbered gallery pages. Seeing the category contents, it lists only the hub gallery pages, and the reason is the numbered galleries are easily selectable as tabs anyway. Adding the numbered galleries onto the category page will bloat the category contents unnecessarily.
Oh! Uh, thank you! I suppose I could do the Nephrites, though they'll have to wait. I'm currently doing a png for Amethyst and I'm going to do a png for Doc after that. And high quality images of them haven't been posted to Change Your Mind's gallery yet, so I'd need to wait for those too.
I replaced the existing Mirror Gem Lapis model sheet File:LL - Model Sheet.jpg with the higher-resolution one you just uploaded and nominated the latter for deletion. When uploading files in the future, give them descriptive names and make sure we don't already have them. If you have a higher-quality version of an existing file, replace it.