Heighten
Definition 1 of 6
Pro Tip 1/2
Physical Alteration
Use 'heighten' when speaking about making a physical object taller, not when making abstract concepts taller. She heightened the shelf to accommodate larger books.
Pro Tip 2/2
Visual Clarity
'Heighten' often relates to improving sight or perspective by increasing elevation. He heightened the camera to capture the entire scene.