Painting the shadow, this is as easy as it gets in watercolor, wet the are with clear water and drop in the pigment, let the water do it's thing. I love this shadow, warms to cools. I did just begin painting the stopper. Pain very light values, follow the curves and wha-la success.
Finishing touches on the perfume bottle. Up in the right hand (corner?) area of the perfume bottle I painted in a heavy mixture of dark blue then gently adding a mixture of purple, this are is the only tricky area, it is all in the timing and keeping a bead of pigment so that it does not dry out while switching colors, this is called a gradated wash, with a pesky highlight.