After crossing the two loose loops intead of stcking either side through once you stick it through and then stick it through again. Hard to describe without diagrams, but try following the way I wrote and I think you woll see.
This discussion should probably be moved to the Halacha thread.
I can’t really follow your explanation, and I found it difficult to follow some of the diagrams and explanations. So if I may, I will offer my own description of how to tie an Ian knot, and please explain to me where the problem lies.
Make a loop with each end of the lace. Make sure that the loose end of each loop faces a different direction (if one loose end faces you, make sure the other faces the other way). Then just pull the loops through each other. C’est tout!