Cosmic Gravitational Wave

Lightly sketch the basic mountain shapes and horizon line with a pencil.

Apply a diluted wash of black ink to the sky area, allowing it to fade towards the horizon.

Use a darker, more concentrated ink to define the mountain silhouettes, creating varied edges.

Create texture on the mountains using a dry brush technique with black ink.

Add a lighter wash of diluted ink to the foreground to represent the ground or water.

Use a stippling technique with a fine brush to create texture in the foreground.

Add subtle details and highlights with white ink or diluted black ink.

Allow the painting to dry completely and add final touches as needed.