I have a mod called Golden Age Combat
It brings back sword blocking and other combat mechanics before the 1.9 combat update.

Alright, Im just going to show whats the issue with the images below

Sword Blocking with the mod

In third person, I look like I'm eating/stabbing myself with the sword

MC: 1.12.2
Forge-14.23.5.2860
Mo-Bends: 1.2.1
GAC: SwordBlockingCombat-v1.2.3-1.12.2
PS, I suck at explaining stuff due to of my lack of social skills