Question about using Nocturnal Sect?

[sharazisspecial]

From what it sounds like though, Aspected Helios and Aspected Benefic only provide a shield based on the HP restored. So does that mean if someone is at 100% HP and I cast that on them, it provides absolutely zero benefit? And if they were down 800 HP and I cast it and it restores 1000, that they now would have a 30 second shield of 800 HP? That's the way I interpret it.

No, it does not work like this.

If my Aspect Benefic heals for 1750hp , even on a target with hp. It will always produce a 1750hp shield.
The green floating text number is how much it shields.

The party was never really taking major damage either so I felt like many times I was just standing around waiting for cards etc, as the WHM was pretty much solo healing it before I could even do much, making the shield parts of Nocturnal really not that beneficial. Am I understanding that correctly?

Learn to switch into cleric stance and start throwing some dots at least. That will be your role when you have a WHM as a partner.
When you have a SCH as a partner, first off you would not use noct stance (because your weaker shields would overwrite SCH powerful crit shields). You would also be healing alot more then the SCH would be since they will be putting up DOTs.