Quanon

Héhéhé, I think it's pretty okay, for your first more serious try outs at this.

I can't expect you do to some crazy 3D out of nothing

Well the factory is still kind of BLOCK on BLOCK. I'm not saying you should switch to cylinders, but you can mess around with adding in extra edges. Like that you "cut" up your block in more faces. And some of those faces, you can extrude inwards or outwards.

Again, creating new edges, you can then use to move up or down. Anyway, hard to put into words

Plus, I can't do it for you, 3D is really DO IT YOURSELF and get BETTER. Takes some time, I've been at the start.