Giving my touch to this artboard!

I am learning Sketch right now and the tutorial gave a task to customise the given below artboard using your own colour palette and fonts.

As the books name is Sea Life I wanted to have a bluish-green colour scheme to the artboard. I used the same light shade for the reviews below as well. For the other elements which I wanted to be highlighted, I gave them a contrast colour and made sure its visible with a gradient background.

The name of the book should be the first text that catches your eye and hence I had a strong font for it with the darkest shade in the palette and had a small tinge of shadow behind to elevate it.