Sorry I don't have any pictures.
I hoped my explanation was simple enough. Just cut the "Y" notch as you normally would do. Glue the fabric over the whole glare shield, completely covering over the notch. Then just cut a single slit in the fabric down the center of the notch including each Y branch. Slip the glare shield into place and then poke the fabric edges around the "Y" notch down around the X tubing with your fingers.

Maybe the next time I have the glare shield off I can take some photos. Photos would not be very good with the shield in place.