Playstyle
Psylocke excels at disrupting backlines. However she isn't just a diver, Psylockes strongest trait is arguably her Off-angling capabilties. Holding an Off-angle preventing space, and diving when the map and the fight allows you to is where Psylocke excels. Rinse and repeat this scenario Flank > Off-angle > Farm Cooldowns > Flank. But keep in mind sometimes Psylocke just can't flank. Psylocke sometimes has to stay near her team peeling, and poking at tanks. Psylocke is a very versatile hero so keep that versatility. Shoot at divers, hold your space, and keep your ults smalled and controlled. Her ultimate is either a fight winner or at max value a solo ult. The better the players the less people you want in your ult.
Your primary damage comes from landing direct hits with your rockets. In a team fight, prioritize staying airborne to make yourself a harder target to hit.