@von_Nimmermehr Hi!
I love the different and easily recognizable fun levels. Except I cannot tell what the the top identifies with, are you pointing to something specific? EDIT: is it suppose to be a flying UFO?
Concerning your perspective, where is horizon line? I ask because I can see a lot of the top portion of the deck in the upper level and very little on the last circus level. If I can't see much of the top I think it's at eye level but then I should see the underneath portion of the top level deck. Do you understand what I am trying to explain? Then you can go through and adjust the other parts. Also the top level looks like it's on a tilt, is that on purpose?
I'd also adjust the top level a bit more to the right, to balance the weight on the left. And maybe lessen the tree foliage on the middle level on the right side, as you add a tiny more weight in tree foliage on the top level (but it may be okay if you move the top level over a bit).
I love the design of the trunk portion! Keep going, I am excited!!!
Heather