flowers in the garden - even if you just buy bedding ones and shove them in willy-nilly. big flower pots on your front drive (if there isn't any planting space)
people say the house looks cold but i think this is because all the pictures have been slightly sun-bleached - it was a very sunny day. good day for pictures would be a bit less sunny so you can get a blue sky as a background for your house, and all pictures of interior less whited-out.
you want a picture of a bedroom (made up with bed, big fluffy pillows)
the picture of your downing room includes your booster seat - doesn't need to!
i am sure there are sofas in your living room - they should be in the photo.
and as we all know, whatever you have on your mantelpiece should be symmetrical. two candles, not just one on the left...