Here's my thoughts (although probably repeating previous comments):
Picture 1: I would repaint the front of the house - a cream rather than the dull colour, Make it look loved from the outside - hanging basket?
Picture 2: the blinds are doing much for the look. Draw them back and try to plump up the curtains. Maybe nice rug and vase of flowers on mantelpiece
Picture 3, 4 5 looks nice and homely
Picture 6: not good. Large rug, bigger furniture (Freecycle?), make it looked used and lived in
Picture 7: nice. Maybe better co-ordinating bed linen and smooth it out before pictures
Picture 8 and 9: nice
Picture 10: you need to add some greenery/flowers - put some pots in with bamboo or cypress trees to block out the surrounding buildings. It's the perfect time of year to do that now. Remove the pet cages etc - just leave nice flower pots and the table/chair set
Ditto picture 11 - move the bins out of sight for the sake of the photos. Add some flower pots - you can even move the same ones from picture 10 around although an attentive buyer will spot the trick
Other tips: buy a few nice toiletries, even if you just put them out when buyers view. You're creating a lifestyle/view of a home that is loved