The rehearsal focused on improving characterisation for the musical Grease. Activities included creating tableaus to portray different characters like the Pink Ladies and T-Birds and embodying individual characters through posture and expression. The document's author worked on portraying their character Frenchy, an excited, girly American teen. They struggled with the American accent but learned techniques like watching videos. The author's strength was portraying Frenchy's over-the-top personality but they need to continue practicing their accent at home and setting specific targets for each rehearsal.