Well just use the bigger template of a garden as the idea. You're free to make an orderly or disorderly arrangement. If I had that much space, I would make a walking path (loop) through the space I'd want to create. Maybe a water feature, something simple, a pond with basic circulation you can toss some one dollar goldfish into etc. I'd plant fruit trees, and trees in general, and a shitload of wild flowers. Just make a place you'd go want to picnic with your wife, or walk around with kids or relatives. If you match some of the space to what natural local habitat is like you can add bird houses, or feeders. If all wild spaces is not your style, then think about raised beds, or just gardening in general. Grow some things you want to eat possibly. Fruit has been rewarding to grow for me personally. Don't necessarily think that every section needs to be meticulously manicured. I've got some pictures of some of my flower beds in general as well as some of my fruit. You could even plan to build some kind of sweet ass man-hut inside your personal grove once it matures so you can be a lunatic retired old man surrounded by flowers, fruit, and creatures.
Silly ideas I know, but there is no wrong way to make your own slice of nature. Main thing is to plan what it will grow up to be. Such as not planting your trees too close, patience to let things mature, and thinking about how much sun exposure / shade any given location will be. Its really rewarding to walk through my yard and just hear the latent hum of bees in everything this time of year.