I could say that you are creative, thats some pretty decent use of these walls and tiles. Still, as any beginner usually do, your building is too big. Make them small and detail them more.
there us only 2 lolpictures i liked
first,last
first: i would like to pk there but its autoborder np for begginer
last: Good idea for something but need more detail xD
the rest is bad, srry but keep it up !!
Keep doing what your doing, Don't listen to all these people saying use "RAW" Most of them aren't even good mappers...
Your getting good, Keep it up..
Only way you should ever use RAW is to add newer models to your map or Fix something with RAW.. Other than that, Auto is pretty easy and good to use (sometimes)