For my desing i use a variation of colours that i like a lot, i've always like to use the purple spectrum cos i belive is one of my favorites colours palette, it ads the A E S T H E T I C S effect to everything haha.
City desing: I made the desing here by pressing shift with the basic brush and the res was tie the lines
Sky:Here i use again the basic brush and pressing shift to draw two straigth lines and create a brand, then i paint bucket to create the first line of the sunset sky, from this on i just duplicate the layer and change the colours of the brands to create a degradation effect, the transition effect between afternoon and night.
Then i place the city over the afternoon sky.
Sea and reflection: To crate the sea i take part of the sky and reverse it down the buildings, then i duplicate the shape of the building, reverse it and change the colour for a more faint one, then i liquify the reflect to create the waves of the water on the buildings.
Final result
At the end i added some lights to make a more detailed effect, and the final result is this...
I really enjoy making this design, i think i achieve the result i wanted, while making the design i was listening to a lot of Vaporwave albums haha, i think that helped a little bit. If you like my post feel free to leave a comment below! Followme if you wanna see more desings like this.