unit 121- tutorial castle

I started straight off by creating the Oblivion gate. for that i used a cylinder and extruded out the two spikes. I used a cylinder because i can't get the shape i need to create the gate from any other shape. i also had to divide the cylinder several times to do so. I finished off the shapes by pulling points and edge where i wanted them and by beveling it to make the point.
I created most of the caastle by using the same methodes as the gate.
I used the speed bolean to create the hole where the samll gate is.
I encountered i problem with my layers how ever. I found that the was holes in my mesh, so i had to turn the base ofthe castle (in green) inside out and make the base bigger in order to fill the holes. I also had to drag some points around near the entrance to fill gapes in there.
I've started to apply textures to gice me an idea of what it looks like.I finished adding the texture. i must say, i'm not overly please with this. It seems bare and a bit boring o me. i find i'm better at creating objects than enviroments. but I also think its because i didn't think this one threw at all, i wanted to keep it in theme of my ideas but trully i had no idea of what i was doing.