I always find project management very challenging and dynamic, which provides opportunity to learn and up skill on daily basis. Doing self retrospection often, helps in identifying the short comes and charting out action points. I try to answer below questions to find out the scope for improvement in the areas i rated low. Each project is uniquely different, and hence the scope of improvement varies across project. I would at least do a retrospection twice during the course of project. I encourage you to so, you can derive your own set of evaluation criteria, or feel free to refer use/enhance the below assessment i have created for me.