There are various types of sand art there is sand sculpting such as building sand castles which is well known there are sand paintings, and plenty of other kinds.
When sculpting with sand there is the drip castle type where it uses wet sand that is dribbled down that will form shapes before the sand has a chance to dry. When using the drip castle you just grab a small handful of wet sand and let it trickle to the ground that can eventually create the thing that you are looking to make
Sand painting is where you pour colored sand and powdered pigments onto a surface to make a painting. Sand painting can be a difficult task even if you know what you’re doing. Sand painting does have a cultural history in many places around the world