Look at the preview image; it seems like an actual artist arranged the available items. A round wooden table is at the center of the picture. It is filled with a vase containing plants, a wooden deer. There are two-sized cards on the table against other things.
You can use the giant card, which has a paper clip, as your postcard mockup. The smaller one can function as your business card mockup. To take advantage of this artistic scene, click on the download button right now. Use the smart layer to have a simplified customizing process.