So I have some pixel art questions as I am learning. I am asking about one part of pixel art having the same hue but different shading. I don't understand why good pixel artists sometimes shade just 1 pixel surrounding other pixels. In fact, some pixel art I saw and have on my computer they have a bunch of different pixels next to each other with the same hues but are just shaded. Why do they do that? I know you need to shade because of the light and to make the pixel art look more 3D but why have a bunch of different pixels each next to each other? And if this is good practice, how do I do that too to make it look good?