Stop using your [design work] like a time card. If you did it right, it looks like it was effortless. It looks like it’s always existed. And the client will probably be irritated that they paid you for 30 hours of work to do something that looks like it took an hour. Which it did. They’re just not seeing the 29 hours of bad design that got you to that one hour of good design. And for the love of god, please don’t show them those 29 hours of bad design. A presentation is a shitty place for a sausage-making demonstration and you’ll just come across as a defensive, unsure person needing validation. Sell the fuck out of that one hour of good design — most people can’t do ten minutes of it.