Magic Tricks

I love the idea behind this effect, and the method is very genius. There is 1 major flaw that is, the image on the paper only stays a few seconds. Now I don't know if I am doing something wrong but I have tried every way they suggessted to make the gimmick and it does not work well enough for me.
Like I said the idea is awesome but it just does not work as well as they say it will.
Save your money and get something else, unless you really want the effect, then go for it, it is a nice effect for the streets but does not work well for me.