It seems to me to be a bit of a "human" thing to be making up rules all the time about everything. What this really does, is tightens the little box we put around ourselves. It limits our ability to think creatively and to be imaginative. It can be very harmful to ourselves to start placing rules around our own spirituality and the way we feel about our divine team and the divine as a whole.
So many things surrounding our belief in spirit and divine seems to have rules????? Rules of ritual, rules of behaviour, rules of understanding, rules related to almost every facet of our belief. In reality, there are no rules when in comes to our very own, personal and individualised belief in the divine.
If you want to pray, then pray. If you feel like lighting a white sage smudge stick and throwing red apples into the fire for blessings, then do it. If you want to light a candle and send your thoughts to the universe, then by all means, do that to. Read cards, don't read cards, go to church, don't go to church, call the divine God, Goddess, angels, faeries, mother earth, Buddha, Allah...whatever you like...because in the end, it is all the same. The way and 'shape' in which we view these things is really a construct of our current understanding and there is absolutely no wrong answer with this.
Where we harm ourselves and place judgements on others is when we feel what we believe is better than, more true than or purer than what someone else holds in their heart.
Part of being true to yourself is following the path of your own belief with pure love and faith that what you believe, feel and experience is real and worthwhile. What anyone else thinks is completely irrelevant. This is your journey, your faith...be you because you are right.
With love and light