>>287071672
Another thing that's worth pointing out is stylistic consistency. Solid shadows are a result of anime needed be animated frame-by-frame, so they're a time-cutting style of anime. Anime also uses outlines to accentuate physical details and does not feature much texture details, with colors often being solid.
 Smooth shadows would better fit an illustration, where the artist focuses only on one frame and can include smaller details without resorting to time-cutting tricks like solid shadows and outlines to show detail. Your model has solid shadows but no outline, making it inconsistent in style.