That is a good concept!
you need now to be careful to scaling issues, looking at the waves and the trees arround your statues and ground, your palm trees / birds on the right look way too big.
one thing important is to have a good sense of scale in your picture.
regarding contrast, you can reduce the blacks on the right to make feel more the distance and add some highlights so your mid ground pyramids don’t look too flat.
Regarding Angle/composition, you are using a king of flat perspective and it would have been great to introduce some angles (in verticals for instance) to exagerate the scale of your buildings…
Also, to intensify the light and the heigh, add more light on the top and subtle gradiant to the red/copper on your statues like the sunset would do on very high buildings.
Btw it’s great and I would love to see the next steps,