Explore the journey of submitting a Jupyter Enhancement Proposal (JEP) in this 21-minute conference talk from EuroPython 2018. Follow Raniere Silva and Tania Sanchez Monroy as they share their first-hand experience proposing JEP 23 - Add Template as Metadata. Learn about the similarities between Python Enhancement Proposals (PEPs) and JEPs, and discover the efforts made by the OpenDreamKit project for programmatic Jupyter notebook conversions. Gain insights into the proposal process, from its inception at EuroPython 2017 to its current status, and understand the steps involved in creating a pull request for the Jupyter Project. This talk also covers the speakers' previous experiences with Jupyter Notebook, including its use in Software Carpentry lessons and OpenDreamKit's programmatic notebook conversions.