Start with the subject and the requested change: the same person, photographed waist-up in a warm studio. Add the pose next, such as sitting on a stool with relaxed hands. Then describe the light and the background. Specific visible details are easier to review than a long list of praise words about image quality.
State what you want to keep. Useful instructions include your recognizable face, age, hairstyle, glasses, skin tone and natural skin texture. If you want to keep the outfit, say so. If the outfit should change, describe the new garment and let the original photo guide the person rather than the clothing.
For a series, return to the same original photo for each new look. Repeatedly editing the last generated face can carry unwanted changes into later photos. Keep the identity instruction steady while changing the setting, pose or wardrobe. Review each portrait separately before treating the images as a matching set.