Well the model looks great apart from some small, fixable things
1. it looks like there is no smoothing on the fender 2. try and make sure that the seams between the hood/fender/bumper all match up and are aligned 3. the corners of some of the vents you made are piching, this looks like that because ( i think anyway ) you have a 5gon in each corner. Try and fix it so that it is a tri or quad and it should help
keep it up