At first glance, I notice that there isnt any terrain variation surrounding the house. Your trees all seem to use the same base type for their roots, and all are straight trunks. Your chimney also appears to be much larger than it needs to be, but that could be a trick of the light. Your house's framework appears to be appropriate, as does the layering of your rooftops/how they nestle with each other.



Work a bit more on the trees & surrounding terrain, and it will only compliment your substantial structure.