Erase the selection and make it the background

Erase the selection and make it the background

(nsfw:1.5),(low quality, worst quality:1.4), (deformed, distorted, disfigured:1.3), poorly drawn, bad anatomy, wrong anatomy, extra limb, missing limb, floating limbs, (mutated hands and fingers:1.4), disconnected limbs, mutation, mutated, deformed eyes, ugly, disgusting, cartoon, blurry, amputation, normal quality, jpeg artifacts, signature, watermark, username, artist name, choker, ear rings