You never stop growing as a project leader.
Hurry up and flub your first fifty projects; the sooner you learn from stumbling, the better. Get a taste for all the technical and interpersonal ways a thing can go sideways. Grow past trying to use process to block all the ways projects have punched you in the face. Develop your sense for a project that is drifting off the golden path. Experiment with and develop your moves for bringing the project back.
Accept that people will always ask for estimates. Find peace in a way to provide them honestly. Help your team use estimates as planning and research without feeling like they’re setting themselves up for failure.
Most importantly, give your team the freedom to solve meaningful problems instead of grinding through a backlog of tasks and epics.