@Toshio: nahhh mine are like 4, jalonso, miascugh would be 5 hehe
@Master: I think that if you picked a less saturated tone for the ivy (and the palm tree, to get the same green tones) it would look more natural. What Toshio meant by the high luminosity is that you've used white in the inner lines of the house. You could instead pick a lighter tone of cream (walls) or blue (windows) for that, it will then have less contrast.
Also, if the light source of the entire scene comes from the right, then there is no point in having the right shadow of the butler, just mantain the left one. I personally would just do a circle next to him to be his shadow, but that (of course!) is up to you