Nice model... am no artist, but am into game development.
Am not sure if this is helpful, but the shack does not stand out... if you want to focus on the shack, you could you have used full illumination on it. Again, am not an artist..
hey tnx @dbest and @wozim
i am actually redoing this, planning to convert it into a high poly scene with a lots of additions.will keep you posted.
tex and nr map coming in a few days.