The interfacing will be placed on the wrong side of the facing. So looking at your yellow fabric, the facing is folded back so right side of facing is touching right side of garment. The interfacing will therefore be facing you. The binding is then added. When it is all turned to the right side, the interfacing will be inside and hidden behind the facing. The binding will be turned right over on the seamline. Trust me, it should work.
. It,s so hard to explain. I could show you in a few seconds.
. Get some bias binding and just have a practise. It,s always good to try out the techniques before doing it on the real thing. If you mess it up on the trial, you,ll k ow how to sort it on the real thing.