Thank you for your replies
I just went tot the
NHR seminar in UK held by Meta with Richard B. and John La Valle and as I talked with people the ones that could go in deeep trances and do wild hypnotic phenomenons could visualise really good.
We did for example arm catalepsy and I had someone imagine a huge flow of water going through his arm from left to right in horizontal line infinite line. She did it really quick and easy and I couldn't bend her arm no more. after maximum 1min trance induction.
Then I tried it and I wasn't able to do it.
I asked her how she did it and she said "well I could see very clear my body and the flow through my arm"
One big interesting problem I have is that I can't stabilize an image of my body. I tried look in mirror close my eye open close and maintain and build an image of my body but it vanishes and without any visual input it's hard to do anything.
I'll keep practicing and if you have interesting ideas of how you play inside your brain just post them.