looks like you need seperate the two sides of the blade (facing side and rear side - not facing camera) into 2 smoothing groups. you're getting a nasty black line all the way round the edge.
You'll likely have to merge smoothing groups as you reach areas that need to be on the same group too, such as where the blade smooths out around the top bits.
Other than that it's looking ok, maybe change the skull bit a touch it's looking a bit blobby on the top.
Replies
What do you think about color?? Please suggest me about that.
512 x 512 normal map
maya view
Before color
You'll likely have to merge smoothing groups as you reach areas that need to be on the same group too, such as where the blade smooths out around the top bits.
Other than that it's looking ok, maybe change the skull bit a touch it's looking a bit blobby on the top.
I fixed that smoothing groups with color