If you want a method of payment that works well for you and your clients, Anne Bingham recommends her way of charging based on on herhourly rate multiplied by the time she estimates the work will take. Laying it all out and presenting it to a client probably takes longer than just agreeing to a rate, but sounds like it pays off in the end, not just monetarily but in grateful clients who appreciate you breaking it down for them. (Writers Weekly)