it looks good although I think the city needs to be darker as it’s just a background and backgrounds aren’t usually the centre of attention.

Instead make the roofs with a gradient that have a lighter gradient then the buildings themselves. Make the buildings darker as it gets further back to give an idea of depth.

As an easy alternative change the background to a sky to make the buildings light colour fit better.

Also make the lights that the ships use a whiter colour and not so yellow.

Alright that’s all I think. It all looks great by the way.