@@SelfSync_AIsorry for the late response, it took me about a month to make it and what you should learn is how to cutout and redraw manga characters and how to move them. Another thing is the effects and composition (I’m a horrible explainer)
I get my manga panels from mangadex or mangakaklot, and I use waifu2x app to upscale but if you dont want to download it you can use their website and upscale from there.