[WIP] My First Custom Story DEMO!

[Solipsist]

The castle's walls are very generic; it is an issue I had have seen in every single CS which had an outdoor level. Nobody really seem to think that polishing the outer walls is important; why is that, I wonder?
What you can do is introduce objects which would make sense to be there; insignia, foliage(flowers, trees, bushes etc), less lights (Castles usually only light their entry points as a beacon, but place plentiful of lights on the upper wall and guard towers) which actually brings me to; a bigger wall. By the look of it, it seems that your wall surrounds the castle's wall. On that note, you can also add A few small windows as decals.

If you want to keep the image of "A castle inside a wall inside a wall" to assert its size, you can actually play it out cleverly by placing the castle inside the Skymap in a position that will fixate it to be behind the wall. The next level will have the constructed castle in sight, or just more detailed in the Skymap.

Anything unrelated to aesthetics: The chase is too long without an actual sense of danger beyond a few irritating "landmines", to make the player feel actual hostility beyond "this zone will give you a booboo", you should introduce actions that will have consequences; running to the right place at the right time, doing anything else will doom the player. The most prominent example of this is an Advancing wall of doom.
Wooh, that was a long one.