these were on the index before :)
posterization is low key an art... my best tips would be to first sharpen the image, use saturation/chroma slider to pop certain colors, and establish the contrast before posturizing to minimize surprises.
click the first image to view the rest! there are 33 in total
dithered for cuteness ough they look like little fairy worlds
click the first image to view all 3 ^_^