Tom,
I would start with identifying what areas you want to improve in and how you want to do that. Then select some strategies that will help you to improve in that area. For example, maybe you want to expand your expertise as a good questioner. You could write down some questions that you want to ask in advance of the class. This can be put on note cards and you can lay them where you can easily see them. Then start a Q&A session using the questions on the cards as cues for you. It won't be long before… >>>