Hi,
I imagine your terrace like a one open space, bright living room for complete familly. Making a few changes, you will get interesting multilevel ground when you can play with flowers, ponds with koi fishes. On the left side when you looking to the house, I put one bench near pond that you can enjoy in hot nights. On the big terrase I put one desk with chairs and here all familly can enjoy the outliving dinners. On the finiture schema you can find the plant plans. In front of the entrance I suggest a carport, I hope there is a enough space. The roof construction for the terace you can see on the detailed plan, it is also multilevel light construction with transparent high quality plexiglass.
I hope you will like it.