please help to review AO tutorial

Hello folks,

I have just shooted a video tutorial about AO. Could you please check it out and send me your comments and suggestions about the lighting set-up? Especially in the interior I am not too confident.

The tutorial is on

I made a series of 3 tutorials for building a house. The lighting part was a bit ancient and was not that great. People were asking me to spend some more time on it, so I did. But I guess there still is some area for improvement, so I am seeking your help. My lighting is usually kind of try-error process, but in the tutorial I’d like to pretend to be better that that ;).