Pichichi hit the nail.
What you coach basically said was that you have talent, skills and capabilities you just don't make an impact in the game. You need to participate more, to take the steering wheel of the game at times, to propose, to beat men and set other up or score yourself. You have the skill level to change the game for the better, but your not using your full capabilities, and your probably invisible at times. Look at it like pichichi said, imagine if Messi had his skill level, but never participated, and everytime he had it, he would pass it backwards inocenty and harmlessly? Imagine if Xavi wouldn't run Barcelona and would just receive it every now and then and maybe give a decent pass here or there but thats it. You have to realize that you are good enough, to change the game, better than anyone else, and that you not doing it is basically affecting your team negatively, and maybe a person with less skills than you, but more participation would even be better for your team.
Always try to do something positive with the ball, always want it, always become available for your teammates, always make runs, always change the game positively. Also, this "invisibility" sindrome can come from lots of individual practice, but not enough playing or team practice. You develop the skill level to do lots of great things, but you forget the team aspects of the game, like becoming opening, when to receive the ball, when to do what basically. The best way to cure this and get much better at it is playing kickabouts, scrimmages, pickup matches, and ofcourse teampractices. Force yourself to participate more.
Have you seen Messi? He always wants the ball, Kun Aguero is anotherone like this, they always want the ball, they could even be ball hogs at times but they do positive things with it always, so they get no criticism about it. They've realized that they are the best in the team, they realized they know how to break defenses, and they really just play football, they really want to win, so they make things happen.
Also, ask the coach what he meant by "you don't know how to use your skill". He probably could give you specific examples of moments in which you would need to step up and didn't .
to know Him is to want to know Him more"
"i don't know where the limit is, but I know where it is not"
Tocar y moverse y tratarla siempre muy muy bien..'