Help with "Whim"

so i´m trying to learn Whim right now (Tutorial below) I have no problem with the first part of the Trick, i start having trouble at 3:57 in the Tutorial. i just cant see how exactly he does it, if its in front of the string or behind and so on. could someone help me please? just explain a little closer how exactly the last steps of the trick work.
i always end up in kind of a mess of strings its pretty frustrating,
Thank you!

where is the tutorial

woops sorry^^ its there now

i get up to the point at 6:27, but i just dont get how to do that “string turning” thingy… i just cant see how to move my hand in that way… really annoying me right now, looks so simple but it just doesnt seem to work