The practice of card reading was not originally part of Voudou but in the past hundred years, the religion as not only adopted it but elevated it. I read cards the way my Godfather taught me, in tandem with a Loa, who is not only reading the person with the question but guiding the cards and helping me interpret even better and clearer what is revealed. You ask the question, and I take it before the cards and the Loa. We get to the root of the issue and then discover what needs to be done.
There is no question that cannot be asked and no problem that cannot be solved.