How do you throw throwing knives properly?
well, first off you need a good throwing knife. knives are like people: most of them are good for one thing but not for others, like steve with throwing shields and steve with applying basic common sense. or like thor with electrocuting things and eating spicy foods. or clint with shooting arrows and basically any other facet of human life.
anyway, a good throwing knife will be quite sharp on the point but blunted along the sides–sticks in the target but doesn’t cut your hands. the point and blade should be pretty thick, and the fewer perforations in the blade the better. throwing knives have to withstand a hard impact without breaking, so you want a decent quality knife, and the heavier it is (within limits) the less force you’ll need on your throw.
you’ll want a good target to learn with, something big and soft enough that you’ll hit it and that your knife will embed so you know where you hit, but not so soft the knives fall out. deadpool may volunteer for this job. do not take him up on it. the commentary is not worth it.
grip the tip of the knife vertically between the pad of your thumb and the side of your index fingers. hold it firmly enough that it won’t slide in your grip but not too hard.
stand with the foot on the side of your throwing hand pointed at your target, spine straight. start close to the target (another reason not to use deadpool–blood splatters farther than you think) and work your way back as you figure things out. the biggest part is learning to throw with enough force and rotation so the pointy end sticks in your target. it’ll take time, and there’s really no shortcut for just putting in the practice hours.
if this does not work out for you, i recommend grenades for all your low-accuracy distance combat needs.