1. Open the "Kawaii Mermaids Coloring Book Game" on your mobile device.

2. Browse through the collection of unique mermaid characters, including shark mermaids, stingray hybrids, jellyfish-inspired designs, and classic sea princesses.

3. Tap on the mermaid you want to color to start your creative session.

4. Choose your favorite coloring tool from the menu: paint bucket for quick fills, colored pencils for detailed shading, markers or pens for bold lines, and brushes for a soft touch.

5. Explore the extra features like stamps and patterns to add fun decorations to your mermaid artwork.

6. Select a color from the palette by tapping on it, then tap on the area of the mermaid you want to color.

7. Use zoom and pan options to focus on small details and ensure precise coloring.

8. If you make a mistake, use the eraser tool or the undo button to fix it.

9. Once you're happy with your mermaid, tap the save icon to keep your creation.

10. Share your masterpiece in the comments section or with your friends to show off your creativity.

11. Tap the home button to return to the main menu and start another coloring adventure with a new mermaid.