First of all Thanks to everyone..daverave..honestdom..bullet..murambi..an d i have post this image on many sites but didn't get as good feebacks that i get here.
Thanks once again.

Yes I want to make this scene feel n look like cartoonist.
I think i have to decrease the overall illumination and the texture of helmet n metal props..and a bit specularity n reflectivity on antenna.I will definately make some changes with this image n will post it again.
@HONESTDOM- can you please tell me about monkey island....