Instead of the lighting for a cup, I decided to make a vase that covers a water bottle.
I drew bunch of guidelines for the water bottle to make sure the shape of the vase does not intrude the bottle. Then I put the profile picture of the water bottle to make sure the lines are almost accurate.
I drew a curve along the edge of the bottle and revolved 360 degrees. I am going to put a 3d texture that I design on top of the vase model surface! and the 3d texture mesh itself will be the vase that goes with the water bottle!