Hello, Because you are uploading jibberish filenames and not improving your editing style, you have earned a warning. If you continue acting this way, you will earn another warning until the third one, which gets you a block. I advise you to listen to other user's advice on how to edit here.
Excuse me, why are you replacing over images that are already good quality? There is nothing wrong with some of the images you replaced over. I expect an explanation, so please do not ignore this message, otherwise I will have to take it up with the Admins.