I think no cleavage as the breasts aren't being pressed together enough, or at least I can't say they are without a different angle, and also no sideboob as the outside of the nearest breast is covered right up to the breast root.
I'm afraid, prompt won't help you much, as this picture was created using controlnet (using my own sketch) and inpaint.
score_9_up, score_8_up, score_7_up, (artist:sciamano240:1.1), (artist:kittew:0.75), (artist:ilya_kuvshinov:0.8), line art, sketch, year 2023, deep eyes, perfect face, detailed face, aesthetic, sketch style, thick outline, traditional media, white background, best quality, amazing quality, very aesthetic, very pleasing