How do you apply sand to bases?

The process to apply sand to bases involves first coating the surface of the base and then embedding the base into sand.

Here's a step-by-step guide:

1. Prepare the Base: Make sure the surface of the base you want to apply sand to is coated with an adhesive.
2. Apply Sand: Place the model, with its coated base, into some sand. Ensure the entire coated area is covered.

According to the provided YouTube reference, the key is to coat the surface of the base with an adhesive first, and then simply submerge the coated base into sand.