I definitely recommend looking at the website of the Ayahuasca Foundation. They've been operating for over 15 years in the Amazon rainforest and work closely with a Shipibo family of healers. My best advice would be to focus your attention on awareness of your state of being. Do your best to observe, in the present moment:
1. The sensations you are experiencing
2. What you're seeing, hearing, smelling, tasting, touching, and sensing
3. What emotions you are feeling
4. Your posture, facial expression, gestures or movements
5. The meaning you attribute to the way you are at that moment
Do your best to move towards an embrace of the experience, away from resistance. If you are resisting the experience (resisting the sensations, or the sensory information, or your emotions, or overall interpretation, then moving to a state of acceptance would be huge. Moving to a state of embrace of the experience would be ideal, but you do the best you can. That is a great mantra, 'do the best you can'