Answer
How do I make my garden look bigger?
Sightlines and focal points, larger paving, simple planting, and softened boundaries.
In short
With design, not just clearing it. Drawing the eye through with paths and focal points, using larger paving units, keeping the planting palette simple, and softening the boundaries with planting all make a garden feel bigger than it is. It is one of the things a good design does best.
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