I do readings with the following three things in mind:
1. I sage my deck to rid it of all negative energies and all energies from previous readings, sending them to a place where they can do no harm.
2. I sage my deck and myself to be an open and unbiased medium through which messages may be transmitted from other realms to this one, sans my personal perspectives as much as possible
3. I cannot tell the recipient of the reading anything they do not already know, I can only bring certain things to the forefront of the mind for further consideration
I do readings on my own, usually just for myself, anywhere that time and space will allow. For a busy mama, these areas are few and far between, so when I find enough space and time to flip a deck it truly becomes a special moment within itself. Intricate ceremony not necessary.
Personally, if I have the time, I like to greet and welcome the elements for a balanced perspective and an all-encompasing reading (for the physical, mental, emotional and spiritual parts of the self), and I light a candle to draw my dragons to me, thanking my guides that I'm both aware and unaware of for delivering these messages to me, and putting them in proper perspectives to the question at hand.
I got the spreads I use through books that accompany the decks I use. My readings are probably about as "unmystical" as they could get, following the stardard model for interpersonal communication (from sender, through medium, to receiver) you'll find in mundane, everyday communication.
I couldn't have it any other way without it creating more questions (well, at least on the immediate subject at hand) than answers