1. Relative Spine opening is discussed in Level2.
In summary, open the neck if working with the head, shoulders, open the area around the heart, if working with the heart, etc.
Review level2 video for further information on this.
2. energy with a 'very bright' visual aspect to it. You wouldn't want to use 'dim' energy when healing would you? Make it bright.
Verbal and written language lacks the ability to express the truer purposes of using Bright, and "very bright" concepts.
3. Not really, no. Can't say I have. I'm sure opening the energy blockages would be quite effective, with strong, clear intention and good visualization.
~Z