If I may chime in about the flag. I don't think it's actually the design that's the issue but the fabric texture. A hanging flag would never fold that way as it looks more like a slightly crumpled bedsheet or something but definetly not like something hanging on a wall. And the logo isn't following the folds either so that looks pasted on and thus further increases the unrealistic look.
Many of your other screenshots look amazing though. I especially like Onderon. Great job on that one.