Hei Lem,
1. I've done a small model in my plot, check it. I will try to make it look as good as possible. But I'll decide how it will look in real world after I plan it there.
2. - Coast line - I hope I'll add some houses of fishermen there (2/3). Some fields could be near port village and the coast should be sand beach, but I'll see.
3. I want to add some leaves, etc there, but yea, I've tried it with one block and it looks good.
4. If I could draw every house there so it would be for a long time, so these ones are the main hamlets. There will be some barns, granaries, etc...