self-dedication ritual

By the very definition of the word, you can't initiate yourself, because to initiate requires more than one person. But what you CAN do is dedicate yourself to your path and to the gods you have chosen to follow. For many people, doing this as part of a formal ritual helps to cement their relationship with the Divine. Some people choose to wait until they have studied for a year and a day before having a formal self-dedication ritual. It's entirely up to you.
You may want to wait until the time of the new moon to perform this self-dedication, because it is a time of new beginnings. Bear in mind that self-dedication is a commitment you are making; it should not be done at random or without significant thought beforehand. This goal of this rite is to bring the dedicant closer to the Divine, as well as well as to declare your connection to your spiritual path.
You find a place that is quiet, private and free of distractions, turn off the phone and send the kids out to play if you have to. You will need the following items; Blessing oil, half a tsp of salt, and a white candle.
begin by grounding yourself. Find your inner peace and become good and relaxed. Shut out all the things from life that distract you, forget for a while about anything else, focus only on yourself, and the tranquility you're entitled to. When you're ready to proceed, sprinkle the salt on the floor or ground and stand on it. Light your white candle and feel the warmth of the flame. Look into the glow of the fire and think about what goals you have for yourself on your spiritual journey. Think about your motivations for performing this self dedication.
Stand before your altar and say;

I am a child of the gods and I ask them to bless me

Dip your finger into the blessing oil and with eyes closed, anoint your third eye, some people trace a pentacle on the skin of the forehead, with the oil and say;

May my mind be blessed, so that I can accept the wisdom of the gods.

Anoint the eyelids, don't get it into your eyes, and say;

May my eyes be blessed so I can see my way clearly upon this path.

Anoin the tip of your nose with the oil and say;

May my nose be blessed so I can breathe in the essence of all that is Divine.

Anoint your lips and say;

May my lips be blessed so I may always speak with honor and respect.

Anoint your chest and say;

May my heart be blessed so I may love and be loved.

Anoint the tops of your hands and say;

May my hands be blessed so that I may use them to heal and help others.

Anoint the soles of your feet and say;

May my feet be blessed so that I may walk side by side with the Divine.

If you have specific dieties you follow, Pledge your loyalty to them now. Otherwise you can use simply "God and Goddess" or "Mother and Father". Say;

Tonight I pledge my dedication to the God and Goddess. I will walk with them beside me and ask them to guide me on this journey. I pledge to honor them and ask that they allow me to grow closer to them. As I will, so it shall be.

Take some time to meditate. Feel the afterglow of the ritual and feel the energy of the gods around you. You have brought yourself to the attention of the Divine, so they will be keeping an eye on you. Accept the gift of their wisdom. It is finished.