You may wish to upgrade to an 08 level referee. You may sign up for the corresponding clinic and test when you feel that you are ready. 08 level referees may, if they are deemed qualified, work upper level competitive games. Your club assignor will gradually assign you to more challenging matches. Often, you may be assigned as a linesman with experienced referees to help you to adjust to upper level matches. Your assignments will be commensurate with your experience and knowledge, as perceived by your assignor, of course.