INTERVIEW with writer Christina Nelson, author of The Sign of the Sparrow, first in a medieval-esque fantasy fiction book series focusing upon young teen Charlotte Imadara, who comes of age in a mysterious world filled with complex surprises. Radiating an abundance of positive energy as she approaches the table, writer Christina Nelson sits down for the interview at a popular luncheon spot. Her engaging smile highlights an attractive face, bright hazel eyes and past-the-shoulder dark hair. Raised outside of Richmond, Virginia and a graduate of James Madison University in Harrisonburg, VA, Nelson is mid-twenty-something. For the interview, she is comfortably dressed in a simple, beige-and-brown print sundress. Silver hoops at…