2 days to complete it!, way to go man!, thats pretty good. some things that i see its the seat, looks like its a hard surface, its supposed to be leather or something so, no reflections on that. where the red line meets the blue surface you can see the edges a lot.
thats what i see so far.
I think you still need to work more on the shader, my advice is to take some references from real motorcycle, do a Google search, or look in imagebank.com for one.
If you only wants to show the model you should show it without a shader, use a lambert, and it might help if you show the wire, so that way we can really see where the problem is, for example if you are putting very few poligons, etc.
Whey don't you show us some wires and more views, that way it would be easier for us to give you more advices.
here is link to one of mine renders of motorcycles, the aim was not to do technical ilustration but to convey feeling and atmosphere
hope it will help