While in part agreeing witht the person before me about putting a kind of a "LoreBook" whenever new elements are shown and reader need guidance, I would mostly point out that, while it was a great idea using bits of a bigger panels to give the right hype for what would be the shock image, the quality might need a little rework, altough it's understandable under a technical limit by your side, the only suggestion I could make is, use those pieces as a Reference, and, I know it may take more time, but redrew them, mostyl to avoid a pixelated effect in the final product.
You might do it and update the already release chapter featuring that, or you can also start to adopt it for later one, I did something similar for my series, Originally I was like "NAh, I'll keep the traditional format", but after time, I've started to work (And lose 4 hours) to divide panel by panel and turn the traditional page into a Scroll format comic.
Hope my suggestion might help, and if you need help I'll be glad to give it (Hoping that my intentions didn't sound bad.)
EDIT: Oh, and, maybe there should given more attention in the cleaning, as sometime the underneath sketch is still visible, but of course, I admit that I can be a bit nit-picky when its about details, so, don't worry, take my suggestions with a grain of salts