Thanks for the tips! I completely overlooked the 'smoothing' option on the door. The inside of the house has windows on the back wall - that is what you can see through the front window. I thought about putting white planes in front of them, but thought it would look odd. I went through all my atmospheres, and many of them gave the house such a dark cast. The atmosphere I chose reminded me of 'broken skies' where there are rain clouds and the sun pokes through very bright. I was worried that shadows would conceal all the garden plants that I took so long to place correctly. I'm not an artist - more of a 'director', directing other peoples models around. I learned so much from this scene - thanks to people like you.