Does it Take Practice to Become a Medium?

How much practice does it take to become psychic?  Does a natural medium need to work on her ability?  Can you become MORE psychic or more skilled as a medium with more readings, or is where you are NOW, sort of where you end up?

Psychic mediums work just as hard as any other profession does to hone, improve and optimize our craft.  Here is a short interview with Maria Halvorsen, who shares her experiences as a professional medium and the amount of dedication it takes to do the work she feels called to do.