At the 1993 World Championships in Birmingham, England, Piskun won the gold medal on vault. In April 1994, she competed at the Individual World Championships in Brisbane, Australia, and finished fifth on vault with a score of 9.725 and fifth on floor exercise with a score of 9.675. At the World Championship Team Finals in Dortmund, Germany, in November, Piskun helped the Belarus team to a sixth-place finish. At the 1995 World Championships in Sabae, Japan, she was 10th in the all-around with a score of 38.53.