Base: 1girl, solo, colored skin, pink hair, big hair, twintails, blunt bangs, horns, wings, demon tail, blush stickers, pink eyes, small breasts,

Outfit: sweater, sleeves past wrists, red thighhighs,

Alt Base: 1girl, solo, demon girl, colored skin, pink hair, long hair, blunt bangs, horns, blush stickers, pink eyes, small breasts,

Alt Outfit: earrings, demon wings, leotard, spike bracelet, pink thighhighs, torn thighhighs,

Optional: chibi

Put "blush" in the negative prompt to keep the model from adding blushes for any expression that isn't neutral.

aDetailer recommended.