We used to buy PVA in 5litre containers and made little hangings/tree decorations in this way by painting it on plastic waste (think clear or white recycling materials) and cutting it out afterwards.
If you get the right sort of plastic you can peel it off once dry and stick it on windows like a decal.
As others say, the glue dries clear and it looks like glass paint.
You do not actually have to paint on glass.
If you want it to look like leaded glass you can mix up a solid black and use that for outlines by painting outlines with a fine brush. Once dry the "glass" can be painted in-between.
NotSpaghetti Fri 23-Apr-21 14:50:28
greenlady102 Fri 23-Apr-21 14:40:38
greenlady102 Fri 23-Apr-21 14:39:49
nanna8 Fri 23-Apr-21 14:37:19
Purplepixie Fri 23-Apr-21 13:44:20
felice Fri 23-Apr-21 13:39:53
PinkCosmos Fri 23-Apr-21 13:10:33
Beechnut Fri 23-Apr-21 11:53:39
JaneJudge Fri 23-Apr-21 11:52:32
PinkCosmos Fri 23-Apr-21 11:51:00