To prevent errors and deformities:

Maintain a high resolution and clarity throughout the image.
Use a color palette that enhances the eerie and suspenseful atmosphere, with dark and chilling tones.
Incorporate spooky elements such as grotesque creatures, sinister symbols, or other elements appropriate to the scary theme.
Ensure that the composition is well-balanced and visually engaging.
Verify that there is no pixelation or blurriness in the final image.
Double-check that all elements remain within the safe area of 1,546 px by 423 px.