There's a woman in Australia, named Loongkoonan, who is 105. She began to paint her fabulously detailed works in her 90s. Read about her here.
So what are you waiting for? Now's the time to begin being creative! You can write, do art, knit, design a butterfly garden, write a song, take tap lessons, etc. Julia Cameron has a new book, It's Never Too Late to Begin Again: Discovering Creativity and Meaning at Midlife and Beyond [eBook] to help you on your way!