Are there any special safety precautions needed for the deep subconscious in reaching out to the higher self, and how do we convey the needed steps for the deep subconscious to use?

The key, as in talking to the Almighty, is to address the party desired to interact with and carry out a dialogue. By calling on the higher self directly by name, this will fall under the general schema that an entreaty to the divine realm will be under divine protection, as with prayer. This is important to convey and instill within the deep subconscious the great importance for following this procedure precisely, to have clarity about the intended conversation as to who is allowed to answer and provide feedback. If that is not done scrupulously, then one can never be sure who is answering the call and what may be the end result. People are used to reaching out with the non‑local consciousness and talking with other figures—they might be a spirit guide, a guardian angel, Creator of All That Is, or simply a loved one they perceive may be nearby and sharing their experience in some way when available to talk things over. This may or may not be an accurate perception. To speak specifically with a desired individual, they must be identified with precision. That is always a good idea because it will confer safety, and safety is paramount when dealing with the mind and its activities because you cannot risk a misstep here that could be severe in consequences. Clarity in using proper naming and holding the desired intention for the interaction, as reinforced with some coaching and practice work, will be all that is needed in most cases for people to launch a program they can self-reinforce and gain tremendously in working through many difficulties from the past as well as to take on current challenges and look at future projections, and so on, as an opportunity to optimize the working strategy going forward that will pay many dividends.