Okay, first critique, and first of all compared to the last one, great improvement! The background seems to be visual enough to cause interest but not defined and strong more blurry, which gives an effect of a depth of field, like in movies.
The focus of the drawing is the "couple" which draws me into the scene that is taking place whereas I have seen drawings with backgrounds that are very clear and bold, these aren't good most of the time because they draw the attention of the eyes to the background not foreground.
I like the technique that you have used where the focus is actually placed over the background as if they are on the inside of a window. This causes interest in the viewer because it gives a point of view that most would deem as unexpected.
I like the way you have given the faces a smooth, almost human, texture which causes emotion in the viewer as he can feel more comfortable imagining it, but you have made the necks scaly which gives a sense of realism and actuality, this causes the watcher to be pleased with the effect as it agrees with what they are used to, so they do not reject the idea.
I hope this critique will have helped you with further pieces of artwork.
Greatest Wishes, Darkcyndr