First off, you have added a lot of elements in this on picture and the good news is that you they all fit in so good. So congratulations on that! Now, this artwork has a very rich palette, a perfect combination of warm and cool colors. You have added very complete amount of details and there isn't anything in this artwork that shows you didn't pay good attention to it. One of the main attraction of this artwork is that it is full of various emotions of characters, this makes your artwork more alive. Your background is worth praising, Very detailed and complete. All in all, it is a very beautiful piece of art. Your technique is focused and I love that! Good Job and Keep it up !