Take a razor blade and carefully pick out loose glass chips.
Use a damp cloth to clean the area over and around the crack.
Let the damp spot dry out or use a clean dry cloth to remove the water from the crack.
Use suction cups on the centre of the chips to force them firmly to the car.
A tube should then be inserted into the centre of the suction cups. You have to make sure that it is secured and as tight as it possibly can be.
Apply the repair material on the tube.
Take a plunger and push it down the tube. Squirt the repair material onto the chip. As the suction will be tight, the pressure will make the repair material move to the base of the chip.
You will have to wait for all cracks to fill with the repair material.
In your repair kit you will find a film. Take the film and place it on the crack.
Take out the razor blade again and flatten the film by sliding the blade on it. This will not only secure the film on the crack but also fill in the empty spaces in the crack.
For the repair material to dry out you will have to wait for a good 15 minutes.
After you are sure that the repair material has dried out, gently remove the film from the crack.
Use the razor blade to remove any piece of excessive repair material.