Prompt:

Menacing looking knight helmet, with medieval patterns behind it in the background, clear separation between the helmet and the background --ar 4:5 --sref 3375503792::2 4131168186::1 --v 7.0

看起来威胁四伏的骑士头盔，背景中有中世纪的图案，头盔与背景之间有清晰的分隔。