What would you do with this garden?

Around 2 years ago we built a new house and turned the adjoining field and orchard (on the right) into a garden. It’s starting to look nice but still feels a bit bare. What would you do with it? It’s south facing and is around 3/4 acre.
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Assuming you have the time and inclination to maintain it all. It would be my retirement dream.
and a small, fenced off, veg patch.
I'd leave it the way it is if it was mine, apart from maybe a pond with suitable surrounds for wildlife, and bird feeders.
Then I 'd add a comfy seat to watch it all....
I live in west central Scotland - not where that photo is...
You have room at the far border of your expanse to develop shade gardens, if you like. The perennial beds suggested look pretty, but it is also possible to plan a garden of varying heights. Decide on the placement of your paths and beds; build the hard scape such as the paving or walls, seating areas. Then plant the largest trees first, and after that fill in with shrubs, perennials, bulbs and annuals.
If you have a rough idea of what you want where, you don't have to develop the grand design all at once, but focus on one particular bed.
I envy you your acreage and wide open possibilities, but I have trouble keeping up with the weeds in my .57 acre.