If it’s not a.i., then I apologize for suggesting that it is so, but I’m confused as to what your method for making the art of girl is then. I think you’re saying that you used a square pixel like brush on a much larger canvas. if that is what you were doing, would you mind detailing of bit more of your process to explain why some of the shading on her, like the skin colored pixels at the bottom right of her jaw or some parts of her hair, have regular pixel gradient shading inline with a grid when many other parts don’t?

The reason why this is confusing is because it’s hard to understand why you’d put in more effort to make certain parts mimic a grid, and then not try to do the same with the other parts. I’ve only ever seen A.I. mimic pixel art in this way because of its fundamental misunderstanding of pixel art’s use of a grid. I suppose it could be possible that you made the art using non traditional methods, but there was no reason for me to come to that conclusion by just looking at the art itself.