Trying out stuff on the tabletop again using natural light.. I think this turned out OK for a first try. There's another example in the PiP. You'll notice the PiP is much brighter.......but that only increased the reflections in the glass.

Notes to self for next time: figure out a way to control the reflections on the glass, let the air bubbles in the water settle down before taking the photo, make sure the glasses are cleaner!