''SEVERAL years ago I wanted to join the Junior Police Call's (JPC) karate class, so I became a JPC member,'' said Tang Piu-yi, the chairman of the Wong Tai Sin Junior Police Call Leaders' Council. The casual ''walk-in'' turned out to be such a great experience the 19-year-old developed a lasting interest in JPC activities. After seven years of endeavour, she won this year's Lions Clubs Outstanding Members' Award and the opportunity to represent Hong Kong at the Youth Exchange Camp Friendship, which took place between July 15 and 21, in Indiana in the United States. With outstanding academic records and remarkable achievement in social services, Piu-yi was nominated by the Police Public Relations Branch to compete in the ''School Base Youth Organisation Outstanding Members' Award 94'', organised by the Lions Clubs International District 303 Hong Kong and Macau. She was among the 16 winners from Hong Kong and Macau who were sent out to win friendship with young people from around the world during the 10-day camp. The Form Seven student in Our Lady College said: ''To me, 1994 is a very special year. My efforts towards the JPC Scheme paid off. ''I was awarded an 18-day diploma course at the Outward Bound training school and was presented the Outstanding Voluntary Workers' Award. ''My joyfulness and excitement are beyond description,'' she said, beaming. A confident Piu-yi emphasised that all these honours came from her participation in the JPC. ''I have gained precious experience from simply being a member at the beginning, and as a leader in recent years.'' Asked about her plans for the future, Piu-yi said she wanted to attend university.