Summarize the following:
Hold the 5 cm (2.0 in) section of string in 1 hand and the loop in your other hand. Then, use the section of string to create a double-knot. This prevents the string from coming undone. Lightly tug on the knot to tighten it if it feels a little loose. Hold the loop of string away from the kite. Measure 18 centimetres (7.1 in) from the holes up each piece of string and make a mark. Take both of these points and knot them together to create a smaller loop.  This helps to balance the kite and allows it to fly straight. Trim off the excess string with a pair of scissors. This length of string is what you will use to the fly the kite with. Take the end of the long string and double-knot it to the loop on the kite. Use a double-knot to prevent the kite from coming loose. Consider wrapping your flying string around a piece of wood or tubing. This allows you to vary the length of the string and gives you more control over the kite.

Summary:
Double-knot the string to secure it in place. Tie a knot on the loop of string 18 cm (7.1 in) away from the holes. Knot a long length of string to the loop that you have created.