You can play with the weights, but i prefer you to use between 0.6 to 0.8, 0.6 worked best for me as you can see in the above samples. It may be a little rigid so feel free to use (heavy prompts)

Trigger words

annehalfordexp, red eyes, pinkish brown hair, blunt bangs, braid, twin tails, hair ribbon,

Use (((flat coloring))), (((anime style))), ((flat colors)) in negative prompt for better results or else the result have more anime type look with no volume