He was apparently not at all successful since he returned to Philadelphia within a matter of a couple years, advertising his services as a house and sign painter.
However, he did produce "verre églomisé" miniatures which were made by scratching a gold leaf profile into a glass plate and painting black in the surrounding areas.
The light values of the countertop are weighted on the opposite side by the dark trees and floors.
In comparing Polk’s works to Joshua Johnson, they have very similar style in positioning objects and creating composition.
The art work of both avoids expressiveness and instead chooses to emphasize capturing some likeness of the subject.