Using Blender, I created a ceiling mounted spot light. Anyone who wants it, feel free to download it from https://sourceforge.net/p/sweethome3d/d-models/496/
Light bulb is not included.
You need to put in a a light bulb (light source from the library) and resize it to 3cm. Resize the spotlight width to 5cm and 3cm for the light bulb/light.
The elevation for the spotlight should be set to 227cm and 232cm for the light bulb/source inside the housing.
Then carefully put the light source as deep as possible in the spotlight housing.
Test it in a dark room to make sure the light source fit properly. Light should not escape from the back or sides of the spotlight. Once fitted properly, select both light source and the spotlight housing, and group them.
