I previously showed diagrams of how to set up a camera with a shift lens. These illustrations show the results. Again, they are derived from the manual to my MPP Mk viii field camera.
Below are some images of a similar but inverted approach, with the lens shifted downwards. This way, the elliptical appearance of the top of the glasses, viewed from aside and above, is combined with keeping the stems vertical. Some would argue that this is trickery, but in fact the brain would process the image in this way when confronted with the real object rather than a photo. Therefore it is actually a more realistic interpretation.