Zalando advertises that it is their aim to "empower a strong team of professionals to make sure that all aspects of our business run smoothly and taking full advantage of opportunities to improve, adapt and evolve." So, when sharing your failure, relay your experience in the most comfortable, relaxed, and confident manner possible. You want to showcase that you have taken ownership of your failures and have nothing to hide about them. However, avoid sharing any egregious mistakes that may present you as a liability.

"Well, not long ago, I worked really hard on a project that I was determined to deliver far ahead of my deadline without depreciating the quality of my other responsibilities. I wanted to prove I was ready to take on more responsibility and could handle it in addition to the rest of my workload. But, despite my efforts, I missed an important detail and turned in the work ahead of schedule, but incomplete. This embarrassed me greatly, and I went back to it and was able to turn in the project just barely meeting the deadline. Even though I accomplished the work, missing that detail was a setback and didn't help my reputation. So it was more of a personal failure than anything, and I learned from it, and have improved my processes as a result. I can now say with surety that it is a mistake I won't repeat."