How does my natal chart explain my future?

The natal chart does not explain your future. It is the anchor chart for looking at your future through other charts, such as transits, progressions, returns, and solar arcs. The natal chart exposes who you are, what your interest are, how you may react to a situation. What has happen in your life, or about to happen in your life will be the expression of the above charts. Remember, astrology speaks more about the energy of reaction and attraction. Example, you may have an aspect by transits such as your natal venus sextiles a transit uranus in the 7th house. That could mean new meeting of someone, but not necessarily a new relationship, as it is a transit, and you would need more than that to suggest a new love life.