1. Open the game "Space Wars Cartoon Coloring" on your mobile device.

2. On the main menu, select one of the eight available cartoon space-themed pictures to begin coloring.

3. Once a picture is selected, a coloring screen will appear with the image displayed and a palette of 23 different colors at the bottom or side of the screen.

4. Tap on any color from the palette to select it as your current color.

5. Tap on the area of the image you want to color with the selected shade. The area will instantly fill with your chosen color.

6. Continue selecting colors and tapping different areas of the image to complete your masterpiece.

7. Try to color the picture as quickly as possible. Your final score is based on both speed and coloring completion.

8. If you make a mistake or want to change a color, simply tap a new color and reapply it to the desired area.

9. Once you finish coloring the image, you can choose to save your work by tapping the save button, which stores the picture to your device.

10. Return to the main menu to select a new picture and repeat the fun with a different image.

11. Enjoy coloring all eight pictures and aim for the best score possible in each round.