Construction Plane

You must set your construction plane before you work on your sides to place the lines. Picture a 3D box. Now picture writing on one side of the box. Where you write would be your construction plane. To change a construction plane first select the button from the menu.. It then gives you this menu:

 

You can chose either or . If you chose two lines you have to chose which lines will be your X axes or your Y axes. Once these are choses you can draw on the side of the block that you want.

If you chose then select the highlighted face of the car and click.