1. E+recast E + W + R + Q (for squishy enemies)
2. E + recast E + W + cast R on yourself + Q (for hard opponents)
3. Spend your Flash wisely , not for just a kill ..flash is a great way to sabotage enemies during teamfights.. use it before you W and Ult a near crowd of enemies in order to help your teammates kill them.
4. The hextech protobelt item is the most important spell after Electrocute , use it when you are trying to dodge an enemies spell or use it before you ukt somebody .