for the sunlight, you need to add some stuff in the world-spawn. the first thing you need to do is click the plus on the entity box when worldspawn is selected. "Key: _sun_light Value: 500" the 500 could actually be any number but the higher the number the stronger the light. then to make it have shadows. it is "key: _sun_angle value: 30 -30" once again the numbers are the variables to be changed to fit your certain map. there are more commands to use, but i don't know where to find them.
Then with the stone, for some reason the picture is a gray square, so i dont know what you are asking