Brakes are nice even if they are just from Google Images (don't get me wrong I do the same thing

). Colour scheme works nice although the whole thing seems very flat. Personally I'd add some effects over it such as dust, scratches, speckles or rust and put them on a low opacity just to add more depth to it but not make it overwhelming; generally I'd never have just a solid colour on a bike since it looks really boring and plain.
Also I dunno what these grey parts are but they should go:

Apart from that overall it's pretty decent