Choose the screen ratio before generating and leave quiet space for icons or a clock.
Match the device
Try 9:16 for phones and 16:9 for desktop displays.
Plan the empty space
Place the subject away from icons or the clock and keep those areas visually simple.
Preview on the device
Check the crop and icon readability. Shift the subject if important details are covered.
Example prompt
Vertical watercolor portrait of an adult woman in a coastal garden, subject in the lower third, open blue sky above for the clock.Open editor