hmm about this one, i could say the same about textured part, looks liek quality of the pic is too low.
also those stripes, good idea making one darker and another one lighter, only direction of those stripes looks kinda bad, rotate it more down, so the "skinny" part goes more to the back wheel nomsayin.
also i suggest you to change blue to a different kinda of blue, and a it darker.
:33