Add height and define outer edges with earthen berms.
Break large areas into smaller compartments using hardscape or garden structures such as arbors.
Frame desirable views with short and/or open sections of walls or fences.
Delineate areas with planters of the same style or color.
Focus a space with benches, birdbaths, containers, boulders, and sculpture.
Generate a sense of movement with a dry creek bed.
Select plants with presence (for instance, those with bold, well-defined shapes).
Unify the garden by repeating the same color in different areas.
Construct appealing paths and beds with pockets, bends, swells, and undulations.
Stagger plantings into layers rather than arranging them in a straight line.
Create visual boundaries or screens with large evergreens or mixed-shrub hedges.