The blades of the bow are to huge, don't quite fit to a light weapon like a bow.
You should cut some holes into them, maybe tribal shaped ones, also be a bit more creative with the blades shapes.
The Nail-Rings are nice though that backpointign nails are kinda useles.
Imo the limbs of the bow should get thinner towards the tips (thinner in x, aswell as y dimension), but im not shure abbout that.
The rough iron material also doesn't quite fit for the limbs and I'd prefeared soem leather for the grip.
Seems that one was a rather fast work ;P