Kavanna is intention. Meditate about what you want. What would you like to see in your life? How would you like your life to be? What kind of a life would you like to have? I am talking hopes and dreams here. In your mediation these hopes and dreams are turned into reality by your kavannah, or intention to keep focusing on them until they appear. This is the first part. It attracts the material for you to work with. If it helps you, write down things you want and then think about them.
The second part:
As your mind begins to wander, gently bring your thoughts back to what you want. Start small, just a few ideas at a time and elaborate on this as time goes on. This is meditation. Do not concern yourself with being able to see pictures of anything. They will come in time. Think of this time as controlled daydreaming where you are looking within for your thoughts and feelings about what you want to experience. Kavannah also operates here. It acts to keep your focus and teach you that you can have control over your thinking.
Imagine the feelings you would have were you to receive what you want. Be elaborate here. Become an actor in your own play of life. Feel happy and satisfied and deserving of everything you are thinking about having. It is all good and just for you. This is the way you bring your thoughts into form. This is also how you earth those thoughts by accepting them not only intellectually but in the spirit body of your being which is characterized by your feelings. Feel good about what you want.