Understanding formal elements of art and how to use them is like having a toolbox full of different tools. Everything you need is there, and you can choose which tools work best for the job--your artwork.. Breaking down visual language into specific formal elements and design principles will help you translate your idea into the visual language that expresses it most effectively and influences the viewer’s response.
Line is a mark with greater length than width. Lines can be horizontal, vertical, or diagonal; straight or curved; thick or thin.