So if you are practicing in a karate Dojo, or practicing karate at home, you need to not only make sure you have good technique and accuracy, but you MUST strike with power and venom. To start with use a bit of imagination, when you are hitting a punch bag, focus pads, or kick shields. Try different imagination techniques, imagine the object you strike is your worst enemy, imagine your family is in danger, whatever you do, when hitting a punch bag, focus pads, or kick shield, you must not only destroy the pad or bags, you must also try and destroy whatever is holding them!