Start by placing approximately 2/3 cup glue into a bowl

Add approximately 1/4 cup liquid starch and stir with a spatula

At this point, it's best to get hands-on by taking the slime out of the bowl and working it with your hands. If the slime is too sticky, add more starch. If the slime is too goopy/stringy, add more glue.

Once you have the perfect consistency, add sand little by little and mix by hand. The more sand you add, the bolder the color will be.