Changing the shape of an airfoil. Help

Hi Everyone,

I am somewhat of a novice with Solidwords. The issue I have is that I need to change the dimensions of an airfoil. I can import the coordinates from excel and create the airfoil using the curve through XYZ plot but after creating the part I can't seem to change dimensions. My airfoil in question is a NACA 64-618 but I need to simulate adding a sheild to the airfoil. This means leading edge of the shield is 2 mm in thickness for the first 0.17m and then it reduces to 1mm for a further 0.34m then it has a 20mm chamfer (as can be seen in the attached image). Please can someone explain how I could go about adding this sheild

Thanks. 

Morgan. 

SolidworksModeling And Assemblies