Help me with the fillet feature !.... Please !

Greetings !

I must be doing something wrong cause the fillet feature usually fails everytime i try to use it. (SolidWorks 2011)

I can fillet the edges of a cube but that's pretty much it. ( Being sarcastic here !)

I just made a model of the Icon A5 aircraft and as you can see from the picture below, the edges near the nose are just rasor sharp... (See around the headlights0

UPDATE: The complete model is about 112Mo so i uploaded two shorter versions so that if anyone wants to try to apply some fillets on those edges that  would be great... Of course, i would just need to know how to do it.

  1. "Fuselage-2" (12Mo) just containing the surfaces used to create the fuselage solid body.
  2. "Fuselage-3" (2Mo) which is the first solid body version of the fuselage in my features tree.

Thanks !

SolidworksParts And Features