Alex Mustard’s book, “52 Assignments: Underwater Photography,” offers practical tips to help improve your underwater photography skills. For example, one assignment encourages divers to utilize only available light for their photos, teaching them to adapt to underwater lighting conditions. Another task emphasizes the importance of simplicity in macro photography, focusing on clean compositions without distractions. Lastly, Mustard suggests exploring storytelling through a series of images that capture the essence of a dive or marine life, encouraging variety and thematic consistency.