You could redo the sunken causeway w/RHM and bring the terrace walls it in a lot more. I think it would look a lot better and tighter; use RHM and the in-game highways in conjunction with each other. Don't forget to trace the bottom of your terrace walls with a thin ped path, that way the ground levels out and the wall looks awesome. It's challenging but doable. I do it extensively in my cities.
I do like how it resembles some of the large infrastructure found in the central areas of Chinese cities. Your choice of buildings are pretty cool looking together. And you are giving a lot of detail. It's a good start to me!