Here are a few tips from my kitchen to yours...
*Make sure you have a good rolling boil in your pan.
*Use a strainer to hold the green beans in...that way they won't float all over the place and you can just lift them up, and put them in cold water. (Put them in the boiling water for about 1 minute.)
*Have a nice big bowl full of half water and half ice ready and waiting right next to the stove. Put the strainer in the ice water and let it sit for a few minutes. Drain and place in freezer bags.
I love fresh green beans!! Mmm mm yummy!