what you need:
recycled paper

(1) fold and flip
fold along the length, then open and flip the paper over.

(2) fold in two corners
Match the corners to the fold along the center

(3) fold triangle over
fold along the line made by the previous fold

(4) fold both corners in again
This time fold the corners to a point about an inch from the tip of the triangle so the next step holds them in place.

(5) fold the tip over
The tip of the triangle should overlap the corners and hold them down

(6) fold in half again
Refold along your first fold line. The bottom half should go up and behind the top half, as shown.

(7) make the wings
Fold the wings down parallel to the previous fold

(8) tuck in the nose
This optional fold is just for looks. Hold just behind the front and push the bottom front corner up and inside the plane body.

(9) add some tail fins
Fold the last inch of the wing ends up, parallel to the body.

(10) turn the fins into wind tunnels
Fold the tail fins in half, towards the plane body.

front view
The finished plane should look something like this from the front. The wings should have a little curve to them, this helps produce lift (just like real planes). Throw with a normal overhand flick, or try a quarterback pass straight up into to air.