The fact that the sun is suddenly shining behind Tessa symbolizes the effect the girl has on him. An almost romantic atmosphere occurs when he gives her the earrings. Call it enchantment...
When Johan is at his grandmother's house, he eats a sandwich with chocolate-sprinkles. After he eats two pieces of the bread, there is a cut to the grandmother and back to Johan again - the sandwich is complete again.
When Johan gives earrings to Tessa in the car, the sun is behind Johan (driver side). When the camera switches position, the sun is behind Tessa (passenger side). In the outside shot of the car, Johan is in the shadow.
In the beginning of the movie, the Court decides that Johan has to go to the longstay-setting. In reality, it is not the court that takes that decision. It is the Minister of Justice (Minister van Justitie).