Preparation for Cryokinesis
Your body needs to be in the right condition in order to be able to safely perform cryokinesis, for if one is properly conditioned, he/she is immune to the effects of ice. Start out by Taking a piece of ice and holding it in both your hands. Keep your fist clenched around the ice, and don't let go, no matter how much it hurts. Time yourself for one minute. After a minute, you may release the ice cube. Do this five times a day. After a week, extend the time to two minutes. After another week, extend it to three minutes. Then after a month, keep the ice cube in your hand until it melts. Make sure you condition both hands equally. During this two month period, also begin taking cold baths. Lower the temperature of the water, every week that you extend the time you hold on to the ice cube. After this training period of about two months, you body should be conditioned to withstand hostile temperatures. You can only manipulate ice as much as you body can handle.
Standard Ice Ball
Stand in a grounded position. Place your hands out in front of your navel(belly-button). Shape them just as you would if you were creating a ki or psi ball. Now visualize the water element all around you, flowing in between your hands. Then visualize a cold gust of wind sweeping across and forming the water into ice. Force the ice into a ball between your hands, and let the ice keep materializing in between your hands, until you've made a complete ball. There should a cold point in the center of your palms. This is where the ice element power is actually produced.
Dropping the temperature in a room
Stand in a comfortable position, and feel out the energy around you. Then begin to focus on the temperature of the room you are in. This works best if the temperature is already a little cold. Now visualize the air getting colder, and the energy freezing into ice. It helps to picture a thermometer dropping. Then begin to visualize waves of ice emitting from your body, and going through the entire room. If successful, the room should get a little cooler.
Ice blast
Make an Ice-Ball (standard Ice ball technique). Blast it like a regular ki ball and send it to your opponent then once it hits them absorbing into them and turning your target into ice, they wont turn to ice but they may get shivers, or get cold.
Kori Hari
(ice needles)
Now, to start out, draw in the water energy, and pack it into your arms. Picture it freezing like in the ki ball technique, but staying inside your arms. Now, tense up your arms and shoot them forward as if for a blast, but this time, use your ishi(will power) to have the ice energy come out of your palms and fingertips in the form of little needles of ice, which you should focus on pelting your opponent with.
Note: This is similar to the Ice blast technique, using the icicle. But, it is a bit harder and takes more practice.
Tsurara Tate
(Ice shield)
Stand in a wide stand, concentrate on the elemental energy of water, and draw into your body. Picture it filling up your body, then see the cold merging with your ki in your Tan Tien. When you think you have enough, tense up your muscles, become completely focused, and see the water element exploding out of you and freezing halfway through the air making a dome of ice around your body. Picture this happening and also picture the water element inside of you powering you up internally, like a internal ki flame.
Ice Energy Fusion
This technique will fuse your Ki with the element of Ice. For the first several times you will probably have to do this while in a meditative state. So begin by meditating. Open your eyes and look around and notice the Ice in things around you. Ice once covered the ground you are on. All the things around you have at some point been covered in frost. Feel the temperature of the air and concentrate on the coolness of it. Breathe in, concentrating on the element of Ice. Feel the Ice filling you like Ki would fill you in a Ki Breathing tech. This will saturate your Ki with Ice Energy, creating Ice Ki.
How long it will last depends on how well you perform this tech and how much Ki you expend. Assuming you do a good job with this tech and don't do much to use up Ki it should last between one and a half days to two whole days, during which it will slowly fade away. If you want to replenish it simply perform this tech again. If you need to get rid of it before then simply perform Ki Breathing a few times in order to flush out the Ice Ki.
Ice Ki is very useful in attacks, especially those meant to be painful or to slow down the opponent. Ice Ki cannot be used for healing other than bringing down a fever and cooling an area to reduce inflammation. Those should be done with caution however as dropping the temperature too fast can put the person in to shock and kill them very easily.