I don't know if the lighting engineer you mentioned focuses on lighting engineering or Meguiar's.
If it is a lighting project, it needs to develop in a balanced way from the aspects of electricity, optics, electronics, architecture, design aesthetics and lamp application. From the classification point of view, there are indoor lighting and outdoor lighting, functional lighting and landscape lighting. From the professional nature, we need to consider whether to focus on design or construction, but after all, we should develop in the direction of a lighting engineer. China Lighting Society has some "professional" qualification training, although it is not "practice", but it is in lighting.
If it is dance lighting, we should learn dance design, electricity, optics, lighting application, stage decoration and so on. Engaged in this kind of lighting, you need to know more and apply more.
In a word, lighting, like other majors, needs a person to study and exercise constantly from both theory and practice, get some professional qualifications, do one project after another, and gradually become a veteran and an "expert" in the profession, which will naturally make some achievements.