shape — defined by boundaries like line or color; can be freeform or organic
texture — can be tactile or visual; used to create contrast, emphasis, and to add detail to a design
form — three-dimensional, measured in height, width, and depth; in design, the shape of the object being designed or the illusion of form in print media
space — the area in and distance around objects in a design; in 3D designs, the area the object occupies
color — one of the building blocks of design; used for the focal point, subject, background, or to fill other elements such as line, shape, or typography
value — the range of light to dark in a design; helps create contrast, emphasis, and divide a space in both color and black-and-white design
typography — one of the most important elements of design; conveys information through text as well as the style and placement of text
I'm not sure how to elaborate on the rest, but I hope this helps in the meanwhile. To give you more aid, I attached a PDF I have on elements of art. Reading through it may give you more of an idea as to what to do.
David's Oath of the Horatii was undoubtedly one of his most famous and prized works, quickly becoming the face of the French Revolution and the symbol of patriotism.