Hi,
As long as you have had feedback, perhaps from colleagues, mentors, assessors or even Ofsted and reflect on how this has helped improve practice. So I would say to use an example of feedback given and then a circumstance you have put it towards.
For example feedback on the different ways to handle a child's behaviour, perhaps you tried one way and was given feedback on trying another. You may have then put that into practice afterwards, here you can reflect on how and/or if it helped, how you felt about it, did you adapt it to meet the child's needs,environment and circumstances and what benefit did it provide to you and the child/children?
Hope this helps