Pick the slime up with your hands; it will be a little sticky. Knead the slime by stretching it out, then squishing it back together. Keep doing this for a few minutes until the slime is no longer sticky. If the slime is still sticky, then add 1/4 teaspoon of contact saline solution and knead it again.
There are a few things you can do to make slime less sticky. You can either: 1) add a bit of baking soda (one to three tea spoons depending on how big it is, for the one that you show I would say one should be enough) 2)You can place it in hot water and squish the water out of it before placing it in cold water and then drying it out a bit with a towel. Don't forget to knead it a bit so it stays smooth and not too hard.
