Hrm.. there's a slight imbalance with color. Either 1. you make the grass colors lighter... or 2. you darken the path a bit. With the ground and the path being so constrasting, it's overpowering the house. Otherwise, slick stuff. Very clean and simple. Excellent trees. You left some saturated green pixels near the top trees, by the way. One last suggestion, for any grass that goes in front of the stones, use the lighter green to show that. That way you will have dark grass in the back, followed by the rock itself, then background green that can strike through both, creating the depth illusion more cleanly.
