Here's some other things
you can do with your Darts (planes).
Here are some things that can make your plane soar or glide, try folding flaps on the outside edge at very rear of plane, you can fold them either up or down depending on what you want your plane to do.
If you fold them down and throw it slightly downward, it will tend to nose up and then glide smoothly to a stop..
If you fold the flaps up, the plane will fly very straight and far.
You can make a different flap by bending up the rear edges of the wings.
Don't make these flaps very large, or the plane will nose up tooo sharply and then crash.
Different flaps will make your Plane fly different ways. Try severals things and even combinations to see what you like best.
Remember that even the TINY changes will make a BIG difference in the way your plane flies.
Plane won't fly Staight??
The most important thing is to make your plane carefully. Be sure all creases are even and straight. . Wings need to be same size...
If one side is bigger the plane will curve or not fly at all.
Watch how your plane flies...
If the plane dives to the ground = it may be too heavy for the size of the wings, if you have staples or clips in the nose, maybe try taking one of these out, or try giving the rear edge of the front wings a downward curl.
If the plane noses up when you launch it = try putting a staple in the front of the plane ( in the exact middle or 2 evenly spaced)
If it flies, but curves to 1 side = Check to see if wings are even.Or try bending down rear edge of wing just a little on the side it curves.
If the airplane rolls over or wings droop too much = You can try bending wings up a wee bit, but usually this means you may need to make a new plane.
Later I will add new = Darts and Arrows
(Paper Planes )
Maybe a Helicopter or a High Glider
or the Piggy Back plane...
Till then Happy Flying !!!