Title is odd- looks cold, not warm. The shadows detract rather than add interest - perhaps more or different sources of light to give some depth to the primary subject would help? Dunno. Just thoughts.
Don't know what's going on here, so I'll ahve to treat this as an abstract shot. There is a little sense of texture, despite your use of flash here, which has taken away a lot of the sense of depth and feel to this shot. That diagonal is a classic compositional technique, but there really isn't enough going on here to hold my attention for very long I'm afraid. I'm certain you had some sort of impact in mind, but it isn't clear to me.