Okay, let’s tackle this. So Darlene Kaplan is a professional artist with a certification, which suggests some level of expertise. However, her skills are quite diverse, including graphic design, which might not be as in-demand as fine art. Location is the Washington DC-Baltimore Area, which is a relatively affordable region. Considering her certification and diverse skill set, I would estimate her hourly rate to be on the lower side of the spectrum, likely around $75 per hour, which is a rough estimate and may vary based on specific industry standards and demand.