By Cordelia Hsu PARKES (Reuters) – Among the hundreds of Elvis tribute acts wandering the Australian country town of Parkes, one stands out: Sheryl Scharkie, also known as ShElvis. Parkes, 350 km northwest of Sydney, is home to a 64-meter telescope and an annual Elvis Festival, now in its 30th year. Over five days in early January, some 24,000 fans descend on a town normally home to about 14,000. A nurse by day, the 64-year-old Scharkie is Australia’s most prominent Elvis Tribute Artist (ETA), as they are known, and for most of her nearly decade-long career, the country’s only female one. She …