Adjust your paper airplanes - part 2
Now, I'm going to write about horizontal deviation. When your paper airplane turns right or left, do as the diagram to the left indicates. The plane will turn towards the direction where you will turn the body. The plane of the diagram will turn right. So, if your paper airplane turns right, turn the body towards left and vice versa. I have also found out that if you bent one wing towards up (see "Adjust your paper airplane - part 1"), the paper airplane will turn towards that wing's direction.
That's it for now. If there is a point that I didn't cover, don't hesitate to leave a comment.