I'm no expert on snatchers but the hackles look slightly long Gary, don't know if your'e useing saddle hackles or not, which would be a better option, roughly about the hooks gape in fibre length and maybe use a hen hackle for the head hackle with slightly longer fibres. Your fly tying is really coming on, the key is to refine it every time, your photos are useful as they show exactly what you have done and where improvements might be made and you have the vital ingredient for fly tying.....enthusiasm, keep it up.