One thing you can try is to increase the number of polys on the areas with bad lighting. For example, you can see the edges around the hole in the door, adding more polys can help smooth that shading there. And it looks like the lighting is following the edges on the cylinder on the left, so increasing the number of sides…
Looks like a great start though, I think you could improve your scene composition by adjusting the positions of some of your details. Since the right side of the room is very busy, I'd move all the upper, pipe details and such to the left side. Increase the size of your engines and pull them back so that the player has to…