Custom Kirby

[Mabelma]

Dither is an intentionally applied form of noise, used to randomize quantization error, thereby preventing large-scale patterns such as contouring that are more objectionable than uncorrelated noise. Dither is routinely used in processing of both digital audio and digital video data, and is often one of the last stages of audio production to compact disc.

Sorry I thought that what you did was dithering but no it's that the shadow in the bottom is a bit odd.
Fix the shadow of the shoes and I think that's about it.