How could I improve this character? Flame Reave Spellblade

Here’s my current build.

Gameplay is very smooth with the fire circles of death wiping out the entire screen (…at low corruption, at least). It is, like all my builds, a bit squishy - it dies often at high corruption. I was thinking about using the Wall of Nothing unique chest piece, if I can get one with at least one Legendary Potential.

Any suggestions in how could I improve this?

Reduced crit dmg atop of crit avoidance seems messy. Also armor is very low
Maybe you should try new Tundra helm + Fiery Dragon boots? Remove crit avoidance after it, add more health or something useful. Falconer fists gloves for more flat melee fire dmg
Blessings from Heorot and Volcano - % armor and flat armor. Your % fire dmg is high enough and cold res is pretty overcapped