4. Presence
Aim: to show human presence without actually showing one
Idea: Coffee mug with vapors coming out of it
I have been trying to capture smoke for a long time now. So, after so many failed attempts I finally made it. I learnt few tricks from http://www.digital-photography-school.com/smoking-allowed-investigating-smoke-art-photography.
The main trick is to use a dark background and to only light the smoke carrying vessel. I don’t have external camera lights so I used a torch to light the coffee mug.
Trial photo to just see how Long Exposures and selective lighting go together
I used actual coffee but it din’t produce much vapors 😦
So i used incense sticks, it did produce smoke but it was concentrated to only one place
Too much smoke 😛
Got the right amount of smoke
Changed some positions and got the final photo
Collage of edited ones
My Favourite final photograph
The Silent Discourse 
Using the incense was a very clever idea. Good work!