I think the lens looks good. The body needs a little more attention. The top of the body doesn't seem to blend well with the left side of the body (uppermost section of the body in the image). Also the left and right edges (Uppermost and lowermost section of the body in the image) don't look right.
Damn fine work! There is a tad of 'over-blur' and the odd jaggy on the edges, but very neat
all the same. I'd seriously recommend using a vector illustration tool for the base.