help me. i'm at a mental block.

i'm tring to think up a demon form for silver,but i've hit a dead end.it normally takes me a hour,but it's been a week.please give me some ideas.all i have right now is that he will have cosmic blue-purple slit pupil eyes.thats all. if you know me,i'm usally extremely fast with creating stuff.this is one of my longest ideas.