Magic Tricks

The main technique, i.e. bottom shot, has not been explained in detail. Just saying where to put fingers roughly and doing it fast isn´t good instruction. And what actually happens isn´t neither explained nor shown!
The actual instructions for the move don´t take more than 25 seconds, letting out obvious points this could be shortened to 10 seconds without lowering the bar of the product.
No comments or hints are made about where to postion fingers exactly, grip (e.g. dry fingers), pressure, timing or trainig.