Here's the result of my first attempts:
Camera: Canon EOS 450D
Exposure: 10
Aperture: f/5.6
Focal Length: 55 mm
ISO Speed: 400
Making a shaped bokeh shot with the default Canon 450d kit lens is quite difficult because of low aperture, but it is possible if you make a really small shape hole (I didn't manage to do that). Looking forward to trying this out with a 50mm/1.8!