NEW YORK - Chalk it up to the city's crackdown on graffiti.A 6-year-old child's chalk sketches on her family's stoop brought her bemused parents a graffiti-removal notice that threatened a $300 fine, the family and Sanitation Department officials said. "My mom got a ticket for graffiti, and it wasn't even graffiti,'' first-grader Natalie Shea said. "It was art, very nice art.'' But a neighbor apparently didn't see it that way and called the city's 311 complaint line about the blue flower drawn earlier this month on the stoop of Natalie's home in Park Slope, a Brooklyn neighborhood known for being family-friendly. Full Story - Discount Magazine Subscriptions - Discount Cigarettes & Tobacco - Dremu Skin Care