Illustration commissions are a flat rate based on rights usage, complexity, and deadline. I charge an hourly rate for graphic design depending on the same factors. I go by the classic business model:
You can have it Good, Fast or Cheap. You can have only 2 of those 3.
For more details about usage rights click here. All new clients require a 50% deposit and signed contract, and I accept credit cards, checks, and most app payment methods.
I’ve been in the Illustration and Graphic Design business full-time for over 30 years. If I can’t help, then I usually know someone who can.