Now, I'm going to start with the Fender (driver's side). Trace the outline of the fender (you may want to toggle the "X-Ray" on and off to be able to tell want you are doing on the "Side Blueprint".
This picture already shows the outline being extruded, but for reference, the outlined fender:
I position the "blueprints" to use for accuracy while I'm extruding the face of the fender. By position, I mean you want to line up the blueprints so that the views match, In this case I drew a line on the top of the fender on one print "SIDE VIEW", and a line on the top of the fender on another print "TOP VIEW". Using the lines as guides I match up the "TOP" and "SIDE" views to resemble something like this.
Here is roughly what I mean:
You want to make sure your prints line up, esp when time comes to extrude faces. In this case I lined up the fenders so that way when I extrude the face, it follows the "Top" view.