Lovely B&W with great backlight quality which gives the aura around the head of the two kids. The geometric lines on the ground, competing with the shadow of the two kids gives the image a great texture to the shot.
This is what photography is all about, play with the light. Photography actually mean light painting and you have done it very well in this scene. I like how you have timed the child to be in the light and only the blond hair of the mother highlighting the shadows.