eyes like stained-glass windows

I struggle with similes, and metaphors. I mean I struggle to invent them. Whenever I'm writing a sentence, and I'm on a collision course with one or the other, when I know I'm going to need to invent one in the next 5 seconds, then I start to sweat. When I reach the point of no return, I usually drop a couple of question marks as place holders, in lieu of the magic metaphor, and then move on with the rest of the sentence, fully intending to return once I've given the problem some thought. So, no, they don't come naturally. It might take me hours, sometimes days, to think of one that I'm happy with. Often I never come up with anything, and then I'll go back and restructure a sentence so as to avoid the need. Occasionally, though, one will just pop into my head, like the simile in the header here, that I really like, and that I think is a cut above my usual standard. Unfortunately, this one occurred when I wasn't writing anything. So this is an orphan simile, in search of a sentence. I'll let you know if I ever find it a home.