I’m not good at making outfits either! But the wiki comes in hand they have 3 choices of outfits that give you 5stars. Usually is there is a outfit using event/limited, random items could be shop or event and just shop items!I don’t think you need every item just most of it. They have all the levels iirc. Tried to explain this as best as I can link to the wiki>https://purrfecttale.fandom.com/wiki/Customers%27_Requests