Don't passively wait for feedback from your supervisor. Instead, ask for an "assessment" regarding projects and assignments. Preface the request with your goal. For example, "I want my monthly presentations to department heads to be engaging and effective. Can you assess this morning's presentation?" This approach is more likely to produce the feedback you want. A less specific request such as "Can you give me feedback?" risks a more general response like, "You're doing fine. If there is a problem, I will let you know."