First, figure out what size cup you want. There is a price under the cup. Use that to name the cup size when ordering.
Second, figure out if you want a specialty sno-bliz, such as an atomic or hot rod, or just a normal sno-bliz (maybe with a topping).
Third, figure out your flavor or flavors and any toppings you might want to have.
For example: “I’ll have a $5 cream of nectar with condensed milk on top.”