Allow me to add something here, if you please:
When summoning a Demon/Demoness, try to go into it without any pre-conceived notions or expectations. We're each a little bit different than another, as are the Gods and Goddesses of Duat.
One dedicated Satanist's experience could be very much different from another's. You never really know what all to expect until you experience it. One might experience a flickering candle where there is no draft. Another might feel a sensation. Still yet someone else might just see them, standing right there in front of the. Others might only hear something from the astral. And, still further yet, some of the most heart-feltedly devoted Spiritual Satanists might experience none of this, for Father's own reasons.
So, if everything/anything doesn't quite go as you might expect it to, based upon someone else's experiences described in this group, try to not be sad about it or beat yourself up. Just do your best, be truthful to yourself as much as to the Gods and Goddesses and trust Them. It will all work out.
Hail Father Satan!