Don't give up now mate! That castle was a huge task to try and complete if you are just starting out! My tutorials show you how to create a very simple barrier, just to teach you the basics! Then you choose to go out and tackle a castle! Good on you mate!
I took the liberty of importing it into Reloaded for you. It looks great! I had to resize it in Blender to get the scale correct, but, other than that, great job.
I haven't textured it, as I am busy with other projects, but, it does look good. Keep on it!
I have attached a zip file that contains the .X and the FPE files to make it work in Reloaded.
Cheers
Jay.