A few different types are detailed below. It is probably best to use a fresh deck of Cards with each new subject. Divinations usually revolve around a question asked by the subject. A given Divination usually involves laying down the Cards in a certain array, attributing meaning to each position which holds a Card. The meaning of each Card is applied to the position it falls in.
Divination is more of an art than anything else.
The Diviner must key in on kinesic clues that would normally be invisible to anyone else. The Diviner must decide what, and draw everything together into a coherent whole. The one chosen should reflect what the question is dealing with, and the subject. That card is usually placed, face-up, somewhere important in the Divination array. The suit of the Significator is chosen quite simply.