Your fly looks good - but I will offer a few more comments.
A lot of gamebirds have nice soft hackles as do many hens - partridge is a good one, but not the only one. If you get a hen neck or saddle get a natural one, not a dyed one. Collins Hackle has some very nice hen necks and saddles. An old favorite soft hackle is the Gray Hackle Peacock which uses grizzly hen, or other light mottled feathers. Starling is a great feather for smaller wets. It is better to get a whole skin so you can pick just the feather you need.
A lot of old timers used stiffer hackles in the riffles and softer hackles in slow water. The traditional Spanish wet flies which have been used for at least 400 years (any pattern used for four centuries has to be OK) use stiff Coq de Leon feathers. Stiff hackles do have a place with wet flies.
Finally, your proportions are fine - but there are different schools of thought. Your tie has proportions close to that of a modern nymph - which is fine for emerging nymphs and works well. Other schools of thought emphasize the hackle by reducing or eliminating the tail and extending the body to the barb or even the point of the hook.
More than one way to tie any pattern.