Sam Jenkins discusses the design elements used in creating promotional materials for an indie musician. He chose a green color scheme and nature photography to represent the genre. Based on audience feedback, he changed the text color from blue to white and adjusted photo brightness. He used fonts like Wizard Magic and Alice in Wonderland for coherency across the digital pack, magazine ad, and social posts. Natural lighting was used in the music video to maintain a natural theme. The costume featured indie styles like scarves and coats to match the genre within a limited budget. Overall, the audience provided positive feedback on the design quality and coherent representation of the indie genre.