I found a free ITIL template on Smartsheet that can help you with continual service improvement. It provides a range of templates to streamline your understanding of ITIL and assist you in implementing practices. You can find templates for ITIL service strategy, ITIL service design, ITIL service transition, and more.
Additionally, I found an Excel spreadsheet system that allows you to conduct an assessment of the ITSM Continual Service Improvement process. It consists of approximately 60 questions and highlights areas that require particular attention, giving you an idea of process maturity.
Please note that the provided links are for reference only and you may need to explore them further to find the specific template you are looking for. Good luck with your ITIL process assessment! ??