I also definitely love cover B. I feel like its okay for images to be small or blurry, its the process where you learn things, plus its your first one (:
Thank you, owo! Wow, cover B wins by a landslide! Everyday I learn something new and I just noticed that if I save the artbook pages in .pngs, the images will look better and with less noises/blur, so thank goodness for that QuQ