Hi i am following a tutorial on how to build an audi r8 in solidworks to build up my knowledge on surface modelling, i have come to a point where i am stuck, i am trying to achieve the spline in the outcome in the picture below, and as you can see from my pictures this is the result i am having, the correct spline is a smooth curve along the blueprint, my spline is coming out completely wrong and no matter what i do i cannot get it smooth along that blueprint line, i have attatched the part file aswell if someone could please explain on how to achieve this smooth line

thanks