I have tried to play with the shaped bokeh trick, by following the instruction at DIY - Create Your Own Bokeh.
I am using a M4/3 camera with its kit lens, which is 14-42mm f3.5-f5.6.
I shot at 14mm f3.5, thus the shape I created had dimension less than 4mm (14/3.5). However, I don't get the effect for the light sources. Also, the pictures I took all have the shaped frame, which means let say the hole has a shape of star, my image would be all black but having a small star 'window' in the centre, and it is where my camera sees.
What did I do wrong please? Is it just not possible to play with this effect using the kit lens?