In short, if you try to fold the foil onto the top and bottom of the glass in one push your foil will almost always split. You need to SLOWLY stretch it along the curve of the glass in multiple passes.
That said, another trick that works wonderfully is to use a thinner foil on any pieces with an inner curve. You still need to coax it along the curve but in the example below I simply folded it over with no splitting happening at all. The red arrows point to splits where I used 7/32 foil but on the right side there are no splits at all largely due to the fact that I used 3/16 foil (which is slightly thinner) on that piece.
So then, first up we have Barbara's Beveled Window hanging up and looking oh so good. She really likes using baroque glass for her background and you can see just how wonderfully it offsets the bevel cluster that she's used. Perfection!