At the beginning of the video, I'm in position of fingercross 3T, I have my ring finger above my thumb, blocked, not placed.
then I do a side sonic with thumb variation to have my 1 and 2 finger free to do a little fingercross 12
Then I do a charge 1T to link with the fingercross 34 that I'm fowllowing with a stall 34 then pushed by the preussre of fingers 3 and 4 that I've blocked...