EDIT: When I wrote it, I was focusing mainly on people who, like myself in the past, experienced mental disturbances, in psychiatry classified as psychotic disorders, and who are looking to heal through developing their psychic skills or 'turning them off'. However, anyone who is just starting their journey beyond the body and is looking for off-world friends may find it helpful.
By no means do I consider myself an expert in the field and I encourage you, as always, connect to your highest available Guides, or directly to Source (God, Highest Consciousness, Creator of All) and do extensive research - for your own pleasure, expansion, and inspiration. 
Updated original version
When still experiencing confusion, delusions, etc., this clarity blueprint, as I call it, came through to help me determine what was and what was not worth engaging with. Whatever was NOT coming with 100% clarity, I did not even bother to figure out whether it was a delusion, confusion, or a low-vibration energy form. I just did my best to direct my focus elsewhere.
Here comes my Clarity Blueprint which helped me identify spiritual, or 'extraordinary' experiences before I'd grown enough to trust my Intuition. 
 Non-intrusive - a single 'no' is respected. Even if it's a high-vibrational form of energy, you do not need to accept it or want to communicate with it. 
Non-commanding - high-vibrational energies and beings respect our free will at all times.
Non-invasive - benevolent beings do not affect the quality of your life. If anything, they enhance it with their empowering guidance.
Non-threatening & non-promising - benevolent beings never use threats or promise anything in exchange for their help. Although energy exchanges and favours are common on higher planes, a truly loving, spiritually developed being would never put you in danger or take advantage of you. This is a broad and complex subject that you may want to research further. The more we know and understand, the more confident and fearless we become. 
Compassion & unconditional love - this is the 'aura' the high-vibrational beings come with and stay with throughout the entire interaction. 
Non-judgemental - they neither praise nor speak evil of ANYONE.
No grandiose talk - they never tell anyone they are superior or inferior to anyone (or inferior).
Consent - Even healing energy doesn't go to anyone without their permission. 
Protection - sometimes we can experience fear: during shadow work, before the analytical mind fully recognises an 'extraordinary' experience within our reality, or when intuiting something unwanted. However, as long as it comes from a safe place, this type of fear comes with clarity too: we handle it with ease and curiosity, we know we are sovereign beings and cannot be overpowered without our consent. Unfortunately, sometimes we can consent to or enter commitments without being fully aware of it, for example, by not trusting our Intuition, or participating in certain rituals, which is yet another subject you may want to research.
All in all, the first channel we ever open, in my opinion, should be our Intuition, the divine compass in any circumstances. When we get to the point of clear connection, that is one without fear, we are safe to experiment.