Design the edge
The line between indoors and outdoors is an inhabited space. Plan shade, seating and sightlines with the interior layout rather than treating the terrace as leftover area.
Resolve the practical details
Water, thresholds, insects and maintenance access affect daily comfort. Coordinate drainage and level changes with appropriate specialists before finalising finishes.
Think across the day
Review the garden from the rooms in daylight and after dark. Planting, reflections and lighting can extend the view without turning every surface into a feature.