How to optimise a Warforged Artificer (Armourer) using the new playtest rules for Tanking?

I'm playing a Warforged Artificer (Armourer) using the new playtest rules and would like to attempt to optimise them to tank. I should soon acquire plate armour putting me up to 19AC. I have the thunder gauntlets which give disadvantage on any enemy attacking anything other than me if i've hit them. I'm sure that there are plenty of other ways to increase that role as I level up. What would you suggest?