What are the best techniques for applying bathroom joint compound to achieve a smooth and durable finish?

To achieve a smooth and durable finish when applying bathroom joint compound, it is important to follow these techniques:

1. Start by preparing the surface properly, ensuring it is clean and free of any debris.
2. Apply a thin layer of joint compound using a trowel or putty knife, spreading it evenly over the joint.
3. Use a drywall knife to feather the edges of the compound to blend it seamlessly with the surrounding surface.
4. Allow the compound to dry completely before sanding it down to a smooth finish.
5. Apply additional layers of compound as needed, repeating the sanding process between each layer.
6. Seal the finished surface with a primer before painting or tiling over it for added durability.