GD writes: "Make sure that your customers are seated in the correct styling chairs and pick the hair style and hair dye that makes them happiest. And don't make them wait too long. Different customers have varying levels of patience, and if you can get them in and out quickly, they'll give you better tips. Use that extra cash to buy additions and power-ups for your salon to make your customers even happier. Serve a target amount of customers in a given time limit to move on to the next round."