Falak, for my taste buds it needs reduced contrast, cooler tones & a little reduced brightness to bring-in the mood of depression. I like the image however
The warm tones seem to bring in happy notes to the image however posture of the birds (crow in particular) brings in an element of 'depression'. I hope you don't mind me sharing below what I mean -
It is not a formula, however, we seem to relate different experiences of life to different tonal ranges. Between early morning sky (golden light) and dark night's faintly blue sky (or dark blue) which one scares us more ? Similarly details in an image have a tendency to engage our eyes (not mind) for longer which may be counter productive to the message that we want to convey. It is a very involved topic to understand how different characteristics of an image can influence different moods - colors, details (or loss of it), brightness, contrast all play a very key role in portraying different moods. Some of it will be subjective too (but not all). If you want to pursue photography as an art you may want to think deeper in this direction. That said, I am learning too...