Use different channels, I usually: 1 - Ask for friends and family feedback 2 - Post it and ask for feedbacks on online communities 3 - Use tools like Maze design to test it more seriously. Tip: Don't just ask for feedback, but give people tasks, like: "Find a product and add to chart" etc. If you get a chance to observe people doing it you'll see how important is, because people tend to tell you what you want to hear.