After the first label was correctly positioned on the bottle, all that had to be done in the 3D application to change to a new label was to direct the link to the new label’s Photoshop file. The shape of the label is trimmed out in the 3D application using an alpha channel that is in the Photoshop file.
The virtual lighting tools I used gave me ultimate control over the lighting of the scene. They mimic the softbox lights used in an actual commercial photography studio and allow control over 18 different characteristics of the lights. (You can even dial in a specific amount of wrinkling in the translucent fabric on the front of the softbox light). For this bottle, I relied heavily on the ability to make small changes in the size and position of each softbox light. This allowed for exacting control over the reflections and shading that would show off the shape and features of the bottle and clearly present the product labeling.
Below are additional bottle and bottle-related renderings.