Personally I mostly choose a theme around science. For example I explain how the card travelled to the top because of the magnetic thermodynamics of my hands. Which is obviously just yunkshit, but this way spectators don't tend to ask how I did it because I already explained it.:-)
Total genius! Can't wait for your series! :D
Thanks mate!:-) i'll try to make it as funny as informative:)
There is a new part of my series. :-)
Check it out!