When you are ready to begin practicing this tool, you begin by:
Deciding what you want and writing it down in your Journal.
The best thing to focus on is yourself. Write down what you want to change about yourself. Deeper Wisdom, deeper compassion, the ability to make important decisions easily. These type of things will result in changes in yourself which will lead to major changes in your life. Do you want better health? Visualize yourself having better health and doing the things that bring about better health. Remember the tool of Goal Setting / Planning. You will be writing down what you want in your life and then developing a vision of having that life. Start with "easier" goals, then you can work up to "harder" ones.
Next, begin picturing the idea or object exactly as you want it to be. See yourself in the situation, using the object as if you already possessed it. Make sure you see this very clearly. You might also draw the scene to reinforce the idea, although, this is not strictly necessary.
Once you've got the picture in your head, think of it often. Not only when you are relaxing or meditating, but throughout the day as well. This is the process of sending that positive energy out into the universe. Remember the old saying "You reap what you sow"? Well, you're "sowing" when you think of what you want. The more positive energy you send out, the more you will get back.
Lastly, BELIEVE that you are in the situation you want to be in, that you have the object that you need and it will manifest. Let go of contrary negative beliefs as they will work against your gaols. Negative energies and lack of clarity will counteract what you're trying to achieve. Develop an "attitude of gratitude" giving thanks for what you are envisioning in your life. As things manifest and your beautiful vision becomes your life, continue this attitude, giving thanks all the time.