Explaining how you get buy in would be a much more interesting blog post. The person footing the bill usually wants some plan for reassurance sake. Something along the lines of, "Aha! Gotcha! You didn't do X! I'm not paying!"
Estimates in $$$ desired before start
-> Leads into defining a complete feature set
-> Desire for all estimates in time for all work (BS number, always)
Guarantees on what will be delivered
-> Getting the client on board with paying for time vs. paying for features
-> Offer minimal feature set + what we can do?
-> Dealing with scope creep
Require clients time
-> Feedback
-> Showcases
-> Many A) or B) given B) is 10 times more expensive