We generally prefer for Curators to start as a Contributor. That being said if you have deep domain knowledge and an interest in a Brand, Series, Designer, Character, Auto Race or any other type of Subject and would like to curate that page, let us know!
Besides adding new items and prices themselves Curators check new Database Items added to their Subjects for completeness and accuracy and then verify them. They can also verify other Subjects (say a Series made by the Brand they curate or individual year entries for a Racing Series).