Ok, first, give people the time to come and look at your model and then think of critique, they will come eventualy ( within a day ). As for my own critique:
1. I don't know how long you have been modeling, but the grip could be a little more detailed. So does the hand protecting thing.
2. I don't know if its the angle the render was taken, but is seams as if the blade is kinda fat, maybe make it a bit thiner.
3. For the normal, I don't think it is necesary unless you plan to add scratches in the metal etc.
So that was it and good luck with your next model.
Isocadia