Team up with another person and sketch a safe in the middle of an A3 sheet of markerpaper. Each person gets a different role in this sketchbattle: Person 1 attacks the safe by sketching this scene on the sheet. Person 2 defends the safe by sketching a counteraction on the same sheet. Be creative and expressive using fineliners. Keep sketching until the sheet is full. End up by emphasising a specific scene. This can be done by: Emphasising the specific sketching lines by giving them more thickness; Adding shading in greytones and color; Adding a background.