first you you going to find a reference this can be either 3d or a picture. if you are using three dimensional objects you are going to arrange then with depth between them. Next you are going to create a rough sketch of the still life. after that you are going to re do it on a larger piece of paper. After drawing it on your larger piece of paper you are going to shade and add color to it. using different forms of media can make your artwork even more interesting.