The animation has evolved quite a bit since the first season

Homer Simpson painted on cave wall | paleolithic era petroglyph | prehistoric cave painting | natural lighting | intricately detailed | masterpiece | rule of thirds | yellow and red ochre tones | charcoal

tiling | poorly drawn hands | poorly drawn feet | poorly drawn face | out of frame | extra limbs | disfigured | deformed | body out of frame | bad anatomy | blurred | grainy | signature | cut off | draft | text | watermark | low-quality | signature | moiré pattern | downsampling | aliasing | distorted ...

bad | distortion | twisted | excessive | exaggerated pose | exaggerated limbs | grainy | symmetrical | duplicate | error | pattern | beginner | pixelated | fake | hyper | glitch | overexposed | high-contrast | bad-contrast | (worst quality, low quality, normal quality, lowres, low details, oversaturated, ...

(watermark, signature, text font, username, error, logo, words, letters, digits, autograph, trademark, name:1.2) | (blur, blurry, grainy) | morbid | ugly | asymmetrical | mutated malformed | mutilated | poorly lit | bad shadow | draft | cropped | out of frame | cut off | censored | jpeg artifacts

out of focus | glitch | duplicate | (airbrushed, cartoon, anime, semi-realistic, cgi, render, blender, digital art, manga, amateur:1.3) | (3D ,3D Game, 3D Game Scene, 3D Character:1.1) | (bad hands, bad anatomy, bad body, bad face, bad teeth, bad arms, bad legs, deformities:1.3)