Volcano tiling

[Com013]

I searched this forum, but didn't find useful things concerning volcano tiling.

I am going to make the Big City volcano on Graal The Adventure and I'd like to have some advice in what to improve.

I attached an example level.

In the bottom right are stairs to a lower level, in the top right stairs to an higher level.

I am not very experienced with volcano tiling so I'd like some suggestions about how to improve it.

I know it is common to rate a level here. You are welcome to do so with my example, but please explain why you rated it this way (But something like "It sucks" doesn't explain anything).