Michael Jackson's 14-year-old son, Prince, seemed to make a good impression when he appeared on stage at a weekend charity event in Berlin, attendees reported. Prince told a crowd of about 800 people he wanted to help affect changes for the better in the world. "With everything I do, I try to build on what my father did. I also try to help and change things -- just like he did," Prince told the Tribute to Bambi Friday night. Audience members said Prince appeared poised and well-bred and apologized for leaving early because he had to get back to the United States for school. "I think we can expect to hear more from him," one guest told People magazine. Prince presented the charity with three handwritten copies of his father's hits "Bad," "Billie Jean" and "Smooth Criminal" to be auctioned.