I am a big fan of dreams and astral projection. To experience lucid dreams, you can start by including these nutritious to your diet; Mugwort
5-HTP
Huperzine-A
Choline
Alpha GPC
I have tried the supplement called Dream Leaf. They have all the nutritious above in a pill and works great.
Remember that astral projection and lucid dreaming are different types of things you can do. It can be scary at first. Try to find a mirror in the astral state because when you see yourself in a mirror, you can have a conversation with your subconscious mind and ask questions. First time I did that I was looking at myself in a mirror and I was happy and laughing. It reveals deep stuff most of the time and is a great tool for self-development.
I use lucid dreaming for flying, singing and to play the piano. I try to put down the melodies in a DAW as soon as I wake up. I heard that James Cameron is a lucid dreamer, he got inspiration from it to create Avatar.
It is good to have a detoxified body to experience vivid dreams.
Try this guided meditation.