Tonights the full moon, im looking to evoke the two entities in the title, do they require any type of offerings?
No offering is required, though you can make one if you want to.
Would something like blood suffice, or is that weird?
Angels don’t generally do blood.
I would go with wine, a candle, or flowers.
No offering is required , it would be wise however
No that sephirot filth should be kept away from Azazel’s Spirits like Opfaal. You should really try in a ritual not to mix different energies. Qliphot is Qliphot, Djinns are nature spirits and sephirot filth is just filth. If you work with Azazel’s Legions just center on them in a ritual.
This is just being petty and does absolutely no justice to reality of things lol.
Sorry, but I think you are confusing your grimoires. Opfaal has nothing whatsoever to do with Azazel. He belongs to a completely different astral realm, under the rulership of a completely different spirit.