You are 100% responsible for the content for your website. This means all text, images, and video. You must also own the copyright for the content. That means you cannot copy from other websites or steal images from other websites. Images must be either purchased from a stock images company or photographer, or your own images that you took with your camera. You will be the one that will be sued for copyright infringement if you use an image that you do not have the right to use.
I do not create content. I will reformat content you provide based upon search engine optimization techniques that I know. However you must provide the content originally.