@a guy didn't want us to see his ghetto kitchen, so he moved it to a ghetto room instead.
You need to plant to get the power in, on videos it may seem like its lifted, but for a second it becomes grounded.
Problems when being short of your opponent on your punches means footwork. The distance between lead and rear should be the same when pursuing, if you pursue and end up in an extended lunged position with your heel (rear) raised too high, there's going to be nothing left.
Another problem is garbage padholders. Guys who hold pads/mits improperly, and you build up a habit hitting too far from their face. Its happened to me before