TOUCH ON THE BALL: Does the player have control over the ball with both feet? Can he/she make the ball do what he/she wants while in possession? Does the player look comfortable with the ball under pressure?
BALANCE: Is the players in control of his/her body? Is the player able to change direction in a controlled manner with the ball?
TECHNICAL SPEED: How fast does the player control the ball and play it? Does the player have the ability to use good skill quickly?
COACHABILITY: Can the player carry out a directive from the coach? While many young players are tactically weak, a good player will be coachable, and therefore have the ability to develop good habits?
WORKRATE: Is the player willing to push him/her self to the limits? Does the player attack and defend?
AWARENESS: Does the player see good opportunities to pass/dribble/shoot? Does the player have vision of what's happening on the field or does he/she make the game difficult?
REACTION TO FAILURE: How does the player respond to a bad call or a mistake? Does failure result in a drop in performance?
LEADERSHIP QUALITIES: Does the player communicate to others? Does he/she demand the ball? Will they take charge when the game is on the line?
PHYSICAL SPEED: Is the player fast? Does the player have enough speed to be effective without being exploited by opponents?
SIZE & STRENGTH: Is the player physically able to play with bigger opponents? Is the player's size the reason for his/her success (especially at younger ages)?
As you can see, there are many components, which can go into making a "gold" soccer player. Different positions call for different requirements in players' abilities.
source: Michigan State Youth Soccer ODP
