i dont think you realy can. you are just attuned well to it. u will have all the elements but you can hold one in paticular in higher asteem that the others
hope this hellped
As Amalapond said, you do not have one element. However, you may feel more connected to one than the other. It's best to try to connect to them all, and learn to work with each. As this gives you balance :)
On page 80 it explains about the different elements. And who or what is associated with them. Some people are just drawn or feel stronger with one more than another element, but you should have them all when casting a circle.
You are connected to all of the elements, not just one. There may be one that you find easier to work with or prefer over the others, but that doesn't mean you should neglect the rest. Try meditating or working with each of the elements to see which you are more inclined to.