There are a few things you can do to improve the quality of your photos in Photoshop. One is to use a sharpening filter, which will sharpen the image so that it looks more crisp and clear. Another is to use a cloning tool, which will create copies of your photo so that you can change the composition or focus on one part of the image while leaving other parts untouched. Finally, you can use a Levels tool to adjust the brightness and contrast of your photo.
