Tight Deadlines
I charge 25% extra if the project is urgent and has a tight deadline. I define a tight deadline as 3 working days or less per 10 minutes of runtime or 50 shots.
My recommendation is to leave 5 working days per 10 minutes of runtime or 50 shots, as this allows me time to keep working with other clients, and time for me to show samples of my work for critique and improvement.