I'm trying to add HUD elements to an armour in a mod I'm trying to make, but I cant find any pointers to where to start. If anyone can give me pointers to a tutorial for this or an idea of where to start (I want to add elements to show the charge on the armours and the damage on each piece, as well as show the active features on the armour. [i will hopefully be able to figure this out once someone shows me how to add something basic])

 

Thanks in advance

You should go look at the EE3 Github. The Minium Stone displays an overlay onscreen, you might be able to learn from that. The class that handles that is here.