37 images in total (girl, school uniform, dress), 10 epoch, 2-10 iterations for 370 steps. Useful tags are as follows.

Appearance: sdxl-gruier-serenity, blonde hair, blue eyes, long hair, braid, double bun, forehead, twin braids, hair flower, flat chest, petite

Outfit 1 (school uniform): gruier-school, school uniform, skirt, bow, white skirt, pleated skirt, bowtie, blue bow, long sleeves, pink shirt, serafuku

Outfit 2 (princess): gruier-princess, dress, gloves, bare shoulders, crown, very long hair, white dress, choker, detached sleeves, hair flower, jewelry, lips, white rose, white gloves, tiara, princess