Re: Durham Ranger variant -
Hugh, that's a nice first Salmon Fly; particularly on a #6 hook!
I find it's actually harder to tie on smaller hooks than it is on larger ones. The key with larger ones is to be able to source feathers that are long enough and of high enough quality to work on, say, a 3/0 or 5/0 hook.
Another thing that makes it easier to deal with all of the feathers that you have to tie in, is to use a blind eye hook; where the eye end tapers to a point at the tip; giving you more room to tie in materials without bulking up the eye. PM Eunan (s. fontinalis) for more info on using blind eyes.
There's a whole family of 'Rangers" and related patterns. The whole wing Salmon flies have always been a favorite of mine.