step 1 of 4
I adjusted the curves and spline patched them toghether into polygons. The curves on the SBS is only an illustration to result on the right. I accidently deleted the original curves.
I then slightly Smooth Shifted the middle polygons of the blade to make an edge for the surface.

step 2 of 4
The golden knobs was simple 1 poly discs beveled into shape.
For the grip, I made a ~100 point straight curve, moved it slightly to the left, twisted it, centerd it and finally railextruded a 1 poly flat disc along it. To reduce the polys i Boolean Subtracted a disc through it and removed the inner polygons.

step 3 of 4
These are the presets:
Fabric - Velvet (background blanket)
Fabric - Leather Old (grip)
Metal - Gold_RayTrace
Metal - Silver_RayTrace

step 4 of 4

Final result

