For those who dont know -
A lot of times folks send wood for grafting and end result sometimes is a failure of graft. besides other reasons for failure, one thing you could do is prepare the scion before you harvest. This is the best thing you could do to ensure whoever gets the wood has maximum chances of take.
see pictures below, this is how I prep.
I remove the terminal bud from hardened growth, cut all leaves off.
in about 3 days, the ends of leaf stems will fall off. In about 7 to 10 days, the leaf nodes will start to swell. Once they are swelled you harvest wood, seal it and send away. When buds are swelled, the budwood is fully energized ready to roar into growth post grafting. The picture below, it still has few more days of bud swelling left before I will harvest.
On packaging/shipping.
I dip the cut ends (usually bottom) into warm melted wax to seal moisture., then put it in a sandwich bag that also have moist vermiculite in it. I have successfully sent packages to other side of globe and were viable even after almost 2 weeks.