Hey there!

Firstly, let me just say that I love the start of this plot, but it doesn't look finished to me.
However, I will continue with the review.

So first, your terrain. It looks really nice - I like the mountains, they're hard to make my hand but you did a great job. I would, however, suggest that you mix more block types in with the stone - this can be world edited by a staff member, as long as you provide the palette. It would also look nice if you added a grass/dirt gradient on the peaks of the mountains :)
I also think you need to make the gradient from mountain to the bottom a lot smoother - it looks like it suddenly gets flat, and looks a little unusual. I do, however, like the water area in the corner :3

Secondly, organics - you don't have any on your plot. I think some custom trees, maybe some flowers or even something like a hot air balloon in the sky could look really nice! ^.^

Lastly, structure. The structures you have are really lovely! I really like the simple detailing on the bridge and the staircases. The palette is great, and has a really nice medieval feel to it. However, you are going to need a building of some kind - keep in the Medieval style and make like a tower, or a castle wall or something on this plot, using the detail and depth you obviously know well ^.^

Good luck!
- Dutty :3