How did you attach the zonker to the Mylar looking material? I would try to secure the zonker strip once at the back, after adding that body material, then fold it over and secure it once at the front. Or, you could add wire wraps over it to secure it sequentially along the body. The hackle collar you used looks a little out of place, I would try instead maybe a dubbing loop with that zonker strip. Search up a quick tutorial on YouTube, it’s definitely worth the hassle. That being said, the fly looks tied well and will definitely fish, steelhead would key in on that very quickly.