I was thinking the profile but not sure how to cut it off without it looking weird, obviously can't have a whole head and bust on there, that would be too much detail. I might be able to do like a circle shape with the breast profile going into the cutout circle.. I'll have to see how that looks.
I'm doing ribbons around the tank and probably the classic ribbon design on the switch so I don't want to repeat it too much.
You could just do lines(half circles) kinda like the dragon. I think this is kinda what you just said
I think this would look great