I mix water and paraffin and beeswax, fyi. I’ve got it down to the perfect consistency. If you were to search Dax’s Wax Recipe or I’ll post it now:
You really don’t want to wrap scions (ever) after they’ve been grafted. Always do it before. You can certainly (have the bud and wood parafilmed in advance) but do the cuts and after all held together then cover the union (carefully) with a wax tape or whatever type of “Johnny Wax” you use. For me, I stretch parafilm “sideways” to make it very thin and to create a situation where I’m not putting pressure on the union when finishing up the parafilmed, graft.