Guy need help with PvE build

[StormCannon]

Guys I have a level 58 mage but I’m having a hard time coming up with pve skill builds
Rn I have
Fireball 4/5
Gale 4/5
Shield 4/5
Heal 5/5

For my passive I have everything but crit and movement speed
For masteries I have gale maxed out and shield 5/10

Can you guys give me a good build for pve?

Thanks in advance!