I decided to make a comment again! It's not that bad. Kind of reminds me of some other artists that make a series of an artwork that have some resemblance in some way. Although, it really looks good with what you keep putting up. The grey and red fit nicely and I can imagine it tends to be a bit of a challenge to keep up the same exact things. I do think you should try to change the colours sometimes.
I love this minimalistic style, perfectly composed and balanced but it is very, very gloomy which is not what I prefer myself. I like dark, but gloomy is a bit too much to be of my liking. It works for some darker series, but ones that are brighter themed, the style clashes with it a lot (SAO one has my doubts, but you got the right pic there).
I don't have much critic on it, but it could have a bit...more. I know making the same type of things or the same style is good. But you should try working your way in making it a surprise with every new one you put up with while keeping the same hype for the previous one. Perhaps you could start by trying to refine it more. If you make something 'simplistic' and minimalistic, be sure to blow people away with the little they can look at. You could try giving it a bit more detail for example or different colours, perhaps add something.
Definitely a keeper way to make walls Deto, you really put your signature on it with that style. Funny how it originated from monochrome walling with red to this (who doesn't know deto with monochrome + red). Very intriguing xD
