Today has been a day of blocking in more of the interior of the building. It will be more interesting once the 'shadow' shapes of pipes and technical equipment has been added. There will be some highlights that will add a dimensional quality and reflect some of the ambient light. These large areas look deceptively simple but careful thought needs to go into the selection of the tone to make it 'work'. I shall change the tones as I progress until I am satisfied that the effect that I am trying to create has been achieved.