Hey there, I did the DIY heart bokeh from here: http://www.diyphotography.net/diy_create_your_own_bokeh
and even though they don't mention it in the DIY, I have to turn the heart filter I made upside down to make the heart bokeh show up right-side up in the final image. Not only did the DIY not mention needing to do this, but I also made another filter earlier and tried it on my friend's camera (same setup: 50d with 50mm f/1.8) and I'm like 90% sure I did not need to turn it upside down for his to work!
What's goin on??