(Full body rear portrait:1.5), With your backside facing the viewer

(Full body rear portrait:1.5), With your backside facing the viewer, (On all fours:1.5),highest quality, beach, Natural smile, 20-year-old woman, Thong Bikini, (The upper part of the buttocks is much larger than the lower part:1.3), Thin waist, Thick thighs, Thigh length 60cm, Length below the knee is 40cm, Leg spread, raise your butt

(nsfw:1.5),sfw ng_deepnegative_v1_75t, ((badhandv4)), (worst quality:2), (low quality:2), (normal quality:2), low-res, multiple bodies, bad anatomy, bad hands, normal quality, ((monochrome)), ((grayscale)) watermark, bad legs, bad arms, nipple, unnatural, bad knees