Squat next to your real knife and start to turn it over and roll it on the floor with one hand. See where the balance lies and which lines are good for ratation as others are good for turning. See how the knife balances after a quick spin and does it have different texture on the sides of the handle so you know which side is which if you take it out without looking at it ? Now take of your shoes and still squating move it aroung with each foot. Take care not to spin or slide it into you and learn to balance it all together. If you like flash stand up after a while and learn to spin it onto the back of the foot so you can bring it up without touching. Or maybe using two feet. Remember the blade always. It is a servant like fear as long as it is in it’s right place.