I just had a quick flick through so sorry if this has already been said.
When people buy a house they buy a lifestyle. The people who are most likely to buy your house are ones who have a family - so try to appeal to them. Cute, desirable toys for the kids room - but keep all of the kids toys in the garden or in their rooms. Intellectual - ish (but not intimidating) books on the coffee table. Family photos in frames put about the house - it tells the viewer subliminally that it is a happy family house where there is enough space for everyone but you are still tight knit.
Get rid of the oil stain on the drive. Put some co - ordinating pots at the door and carry the theme through to the end of the parking. As the shot is, it looks as if the blue car is in comunal parking. Get your EA to retake the shot when the sun is on the front of the house, without any cars on the drive unless you can borrow some really aspirational ones.
Get the EA to take the bathroom shot off the site - everybody knows what a shower cubicle looks like and the photo on there shows that the bathroom is only big enough for a shower and you don't hang your towels neatly.
The kids bed needs to be made. Most people will realise that the bed is only tidy for the photo, but it is distracting and viewers are not realistic - they make an emotional decision. They will assume that because the bed is unmade the room will be a tip when they move in there.
Put a big photo above the master bed. It will break up the vast whitenness above the bed.
Take the piano out of the dining room and turn the table 90 degrees. The room is too small for both.
The garden is fantastic - Get the EA to retake the shot though because you can't see past the tree. Prehaps if there is a sturdy enough tree, make a tree house or put a swing up and get them to take a shot from the lounge towards the trees to get a different angle.
When you have viewers ask the EA what their hot buttons are - if they can't tell you change EA. So if someone is moving because they are having another baby you can tell them how happy a place it is to bring up kids, safe, good schools etc. If they are moving because they relocating - give them lots of info about the area, tell them how quiet it is, good sense of community etc. Take the viewer back to the place they seem most interested in at the end of the viewing - that way the positive is reinforced.