Things to do in PvP.
catch -> combo -> escape -> repeat
for Blademaster's catch use:
Charged-Shot unprotected (from a distance and remember to use evade after using this skill)
Quick Draw Super Armor (to get closer to your target)
Retaliation Forward Guard (use it not too close nor too far from your opponent, you can prolong its Forward Guard)
Back-Step Invincibility (to move away).
Divider unprotected (not too close nor too far from your opponent, and remember to always cancel skill with evasionl) (note that this skill reduces Retaliation cooldown)
Skill cycles on how to catch a target with Blademaster:
Cycle 1: Charged-Shot -> Evade -> Quick-Draw -> Back Step -> Retaliation -> Divider (cancel skill with Evade) -> repeat.
Cycle 2: Forward evasion -> Quick-Draw -> Evade -> Retaliation -> Back Step -> Divider (cancel skill with Evade) -> Charged Shot -> repeat.
Keep doing these cc cycle until you can fish for a random cc once you landed any cc proceed with a combo.
Combos:
When you catch a target with Charged-Shot combo: Quick-Draw -> Rising Storm (flow) -> Squall -> Rising Storm (flow) -> Squall
When you catch a target with Quick-Draw combo: Rising Storm (flow) -> Squall -> Rising Storm (flow) -> Squall
When you catch a target with Back-Step combo: Rising Storm (flow) -> Squall -> Rising Storm (flow) -> Squall
When you catch a target with Retaliation combo: Divider -> Rising Storm (flow) -> Squall
When you catch a target with Divider combo: Charged shot with forward movement -> Rising Storm (flow)
Escape:
Evade backwards -> Charged Shot backwards.
Though there are a lot of tutorials in YouTube. These are the basics but effective for learning. Even pros are still doing these. Same goes for other classes. Catch-> combo -> escape. Prioritize own survivability when opponent still has more than 40% HP.