Help with item use animation

I can't find a tutorial for this anywhere but I'm making a gauntlet that'll shoot fire for 6 seconds when right clicked but I can't get the right arm to be raised & point where the player is looking when using the item, similar to using a bow or holding a crossbow. The gauntlet model is a animated Geckolib Model too if that contributes to anything. Any help would be appreciated, please and thank you.