I think it's very fessible goal Everardo, Just like Ncgolfer said, work on yur putting, i would even expand that to short game, as long as you keep the ball in play, the easiest way to reduce your handicap is short game. I work at a lil nine hole muni and before shotgun tourneys(or mens and ladies nites) i usually take 20 balls and drive out and just chip, pitch and putt on the first green. Make sure yur chipping and pitching and putting with yur own balls. You want to develop feel with your short shots, so don't use the range balls when practicing your short game, use your own balls, that way when you get out on the course, you know how your balls react. I also recommend a consteint pre-shot routine if you don't have one.
Keep it short the grass,
Adam