The spheres warm up was the most helpful towards me during this unit. This is because in this warm up I learned how to balance all the values in spheres to keep them looking realistic. Before we did this warm up I had no idea how to create values on a circle to make it look like a sphere. Now that I do know this, I can apply this knowledge towards all the pieces I create in the future.
Composition is the placement or arrangement of visual elements or ingredients in a work of art, as distinct from the subject.
Value is the lightness or darkness in the tone of colors.