Character:

izayoi miku, blue eyes, long blue hair, golden crescent hair ornament, wearing a white lily \(flower\) as hair flower, crescent earring

Serafuku:

izayoi miku, blue eyes, long blue hair, golden crescent hair ornament, wearing a white lily \(flower\) as hair flower, navy dress, sailor dress, short sleeves, white serafuku, white neckerchief

Spirit form:

izayoi miku, izayoi miku \(spirit\), blue eyes, long blue hair, golden crescent hair ornament, wearing a white lily \(flower\) as hair flower, circle skirt, elbow gloves, white thighband pantyhose, yellow dress, yellow high heels

Negative prompt (still investigating in progress):

maid headress (may appear in spirit form)

frilled collar (if you want to change her clothes)