stabilityai/stable-diffusion · How do I stop stable diffussion 2.1 from making a border or a picture frame or placing my image on a wall in room,

Sorry If I sound like I don't know what I'm talking about, because I'm very new to this. However, I have been trying to find the solution to this online and can't find the answer. About 60% of the images that are produced by stable diffusion appear to be framed, or the art i prompted has been positioned on a wall, when I only want the full resolution image with no border or frame. I have tried using negative prompts and positive prompts to fix this and even increased the weight of the words, but nothing seems to work. Any help appreciated