I'd say you need a lot more work on hard surface modeling as things like the chair and mug seem like they have spots that melted or something. You need to be cleaner with your topology. Also, your textures are off in scale. The floor tiles are stretched way to big and that wallpaper looks like it was scaled sideways.
Of course, it's not in UDK so you need to work on your rendering. Are you planning on putting this in UDK? If so you have a lot of fixing to do before hand.
if you're a beginner i'd say it's alright, show your work again next time, and accept all feedback, even if you think they are "bad" they're all good for you, practice more, everyday well when you've got free time , and eventually you'll get to it, you can show your progress on this thread if you want,
I suggest you should join http://blenderartists.org to show of your blender work and get tips instead of using UDK forum. However, after importing these meshes in UDK , or anything related to UDK is fine to show here.
Great resources out there, and great ones posted above. In my opinion, I would start focusing on making smaller things and getting the fundamentals of not only the 3d program you are using, but the fundamentals of modelling. I wouldn't worry about texturing yet. Focus one step at a time and go from there!