The skills you should go for as a striker in Football Superstars are fairly obvious. You’ll want Shooting Accuracy, Anticipation, Kicking Power, Jumping and Movement Rate. There are other things that will come in handy but these skills will be a great help and improving your Movement Rate in particular is essential so you can outpace defenders. There are also loads of great Unique Skills for strikers including things like the Overhead Kick but many of them are tough to pull in the heat of a game and will require some practice.
When you get it right Football Superstars is a hugely rewarding MMO game. There is nothing more satisfying than banging in a goal so get on the practice pitch and develop those striking skills.