a few pointers...
nice picture... but just a few things to keep in mind... the size and perspective... also the cat seems a tad strange... the trees on the left are larger then the trees on the right... and flow off nicely into the distance... but in the background you have these building which are atleast 10 times the size of the trees with massive windows... and half the size of that moutain on the left... i really like how you have done the plants in the foreground... but i feel that the depth of this picture is all over the place... try to make future pictures more defined before adding colours and details...