What level are you on, because as you level up you'll get more ordering slots to make more money. I make a lot of money by ordering as many wedding dresses as I can because they make the most money. They take 22 hours though, so if you have the time to wait for the next day, it's the best money maker. Block your door if you have no clothes in your store, when your clothes arrive, unblock the door and you should get a stream of customers rushing in, might make your clothes sell faster. And don't log into the game so much while you're waiting for your clothes to sell. Sometimes that can slowdown your customer flow. I have 23 ordering slots right now, and if I order all wedding dresses, I make around $500,000 in a couple of days. That's the method I use for making a lot of money within a couple days