No-one is the perfect manager so denying that you have any areas for improvement shows a lack of self-awareness and insight. Focus on an aspect of your management style that you're working to improve. Describe the steps you're taking and give evidence on your progress.

I have been trying not to give my employees all the answers when they ask for help with a problem. They need to learn how to come up with the solutions themselves and I need to guide and facilitate this process. I have read up on how to do this and have put these facilitation skills into practice.