There are a few qualities you can work on to be a good wide receiver.
The ability to catch and hold the ball.
Catches win matches. Learn how to be in the position to catch and hold onto the ball so that your team will gain an advantage in field position or touchdowns.
Learn how to make flawless plays with the quarterback.
The success of the wide receiver is dependant on the quarterback. Both must know how to create and execute plays so they are one step ahead of the defense.
The quarterback needs playmaking options, which will require the wide receiver to run routes that will give the quarterback throwing options.
The wide receiver must master the routes, throwing plays, and positions and have the quarterback throw with precision so that the plays are executed perfectly.
Acceleration and agility.
The two go hand in hand since the wide receiver needs to accelerate to a top speed quicker than the defender. At the same time, he needs to run angles and make pivots that will secure open space and time to be in the position to catch the ball.