That's a decent start to the saloon you have there RnDr FOX. Right now the main issue seems to be the size ratio of things. I'm not sure if the shingles there are the roof. If they are, it's MUCH too low. Remember to keep in mind that people want to walk in these buildings. So try to get the door a realistic size, where the two swinging doors are also realistic in comparison (as Olias said, the door is a bit too wide right now.) You also want to keep in mind that the ceiling needs to be a good deal above the doorway, and the roof would go above that.
I like that tutorial, I'm sure people will find it useful.
One tip in there I'd like to add though, bumpmaps don't have to be straight black and white. They can be grayscale. The darker black something is, the more it will be indented, the whiter it is, the more it will be bumped out.