That looks amazing, though I believe you should add dimension to the blue part of the fence (I believe that’s a fence) and also distinguish the clouds in the background from the sky since the clouds near the lighter blue to yellow blend a bit into there. I suggest darkening your cloud’s shadows since your lighting and use of color theory seems perfect there.
I also suggest darkening your shadows on the golden and red tops of the (pillars is the only work I can think of right now 😭) and maybe using the smallest bit of white for your shine. You can also look up tutorials on how to draw gold if gold is what you’re trying to achieve.
For the two beige silhouettes above, again— darken your shadows a bit for greater depth near the outsides of the silhouettes.
Other than that, the artwork looks awesome and it’s so creative!
I’ll post progress photo with those edits soon as I can get to it! :D tyy 