Try to do a dubble jump, pounce upwards, tripple jump, nine lives, punce, quad jump combo. Hit ur daggers and win the 1v1, unless its hitscan or a counter. If that play safe. If the enemy is spread out or someone is low, try to outflank the enemy.
When playing against champions with deployables, use your RMB on deployables, to ensure you don't miss the moving targets. Keep in mind, that RMB can jump through shields , if shot on objects/enemies in front of the shield.
Evie's ultimate slows and cripples enemies, soar towards the enemy's spawn and try to catch their tanks and healers in the Ice Storm, it can seriously delay them and give your team precious seconds to secure the objective!