My twopennorth'
Pic 1. House looks neglected from outside, grass doesn't even look cut. What's that blue bit? Is it a feature of brick, is that one on the other side I can see? If so, cut back the bush so you can see both of them.
Pic 2. Nice room. Plump up/turn over your sofa cushions though. 
Pic 3. Lovely. If I was being REALLY fussy I would say your knackered old oven gloves (just like my ones!) ruin it a bit, and cooker looks a bit greasy (but still cleaner than mine).
Pic 4.
Why has this been taken from an angle so that you can see there is a lot of houses/flats very close?
Pic 5 - too dark
Pic 6 - That is just a picture of your sofas!
Pic 7 - see Pic 2
Pic 8 - oooh gorgeous! Should have been one of the first pictures to hook people in
Pic 9 - Why take the picture from such an angle that all you notice are the houses across the road staring at you?
Pic 10 - Just a picture of some kids' stuff and a window. Need a picture of the room.
Pic 11 - same comment as for Pic 10
Pic 12 - ooh fab - should be much higher up the list of photos
Pic 13 - Lovely stairs but I can't decide whether I love this or whether it looks a bit cold and communal hallway like. Skirting board looks dirty, sorry. Maybe if you stood at the bottom and took the picture looking upwards . . .
Pic 14 - Looks tatty, sorry
Pic 15 - urgh no, get rid of this one
Pic 16 - Much nicer picture of the garden than 14.
Pic 17 - Quite like this one
Pic 18 - why do you need this view? It is just not you house's best side.
Sorry for all the criticisms but you did ask! It's a lovely house BTW.