Take a look at the Stable Diffusion community: images generated from plain prompts like "a guy walking on the street at night" returns extremely blend images, while throw in a bunch of modifiers like "futuristic", "cyberpunk", "4K", "perfect face", "trending on Artstation", "realistically shaded", etc actually adds in real vibe of art.
Also, sometimes the ways are not obvious. In the first place the model having difficulty on drawing hands. But later people find negative prompts which essentially saying "I don't want ill-drawned hands" works surprisingly.