Hi! Yes the best way is to get them from drawings. Find the best possible drawings you can because if these are wrong then the whole profile is going to look wierd. These aren't really bad choices as these are much loved aircraft for which a lot of refference material is available. The main thing you should do before starting is getting as much refference material as you can of the plane you are doing and making sure you are proficient at the use of the graphics program you intend to work with.