What can I do to improve this upcomming project??

Hii! I just posted a something about this new build I made. It's a build for the lego Ideas challange 'Treasure Quest'. I am going to call it 'treasure of the clouds'. It's a story about Johnny Thunder being on an expedition to the golden cloud. The cloud is the peaceholder of the air, and responsible for weather and gravitational pull. It's located in the castle of clouds, which is floating on... you guessed it! A flying cloud!! I posted this same post 30 minutes ago, but someone asked for...