I would suggest Tai Hang (大坑). A secluded community near Causeway Bay with plenty of old Tong Laus (old HK buildings) and trendy shops. It's also quite quiet and easy to get to.
English Info: http://en.wikipedia.org/wiki/Tai_Hang
Chinese Info: http://zh.wikipedia.org/wiki/
Date: 14 June 2012
Time to meet: 1:00 pm Tin Hau MTR Station Concourse
What to sketch: Anything Tai Hang (Tong Laus, Street Scenes, Old Shops, new shops etc.)