Okay, let’s tackle this. So Daryl has 43 years of experience in various design fields, which is impressive. However, his experience is primarily in illustration and architecture, which may not be as in-demand as other skills. Location is McKinney, Texas, which is a smaller city. Median rates for architects and illustrators in the US can range from $50 to $150 per hour, depending on experience and location. Considering his 43 years of experience, he might be able to charge a higher rate. However, it's still a bit lower than the average rate for architects and illustrators in larger cities. I'll estimate around $125 per hour, which is on the higher end of the median range.