In an earlier blog post, I mentioned contracts with deities. If you've ever read a Wicca 101 book, you've probably come across the concept of "dedication" and matron and patron deities before. Many such books recommend practicing for at least a year and a day before declaring yourself a witch or committing to a magickal path.
Everyone has their own guideline for when dedication or contracts with deities is appropriate. My personal guideline is a minimum of one year in relationship with a deity before even considering dedication. Just as I would take time to consider moving in with a romantic partner, I do the same with deity.