If you only received tip cuttings it would be a no brainer to quickly bag them up. However in most cases cuttings come from all parts of the branch.
Use this simple technique of looking closely to at the nodes. If you see a Big Smile its the right side up if it looks like a frown it's upside down!
If you see a Big Smile it's the right side up if it looks like a Frown it's upside down!