Jack Henderson is excited about the video game brief due to his knowledge and experience in video games. He plans to create game assets using Photoshop and Premiere and has some initial game ideas. His previous IRN-BRU project was restricted, but this project allows more creative freedom. He created a mind map and mood board analyzing popular games to influence his product's graphics, colors, and style. His schedule outlines tasks like audience research, asset creation, sound design, and evaluation over 5 weeks.