I have been working as a portrait artist for 30 or so years. My skills are available for commission art. I work from photos primarily. I charge by size, and as of 12/16/2023 I charge $1.00 per square inch for up to 3 subjects in the project. Each subject beyond 3 is an additional $50. I require a MINIMUM down payment (usually 1/2 unless it's a smaller project) up front to begin the project.
The chart below gives an idea of sizes: