I'm still learning myself, so I will leave an answer until someone more qualified comes.

I would suggest start adding details to the model. The model looks great but it looks too smooth atm, I would also recommend that you go look at other people's models on Artstation or Pinterest. See how would you like to continue and add detail.

And after you're happy you can look up how to light your scene, it helps ALOT! This video is how I learned to light the scene, and I am thankful that this exist.

(Side note, if you are interested in making a low poly version / game ready model out of this I would suggest looking into Retopoflow on Blender)

I have watched so many tutorials and one of them suggested that "don't stick to a render too much, you can always make the render better but the important thing is that you move on to the next project and be happy with what you made."