Hi Paul,
At a guess, I'd say you're a graduate of the Scott Kelby school of portrait retouching?
In all honestly, I don't think that there's a lot I can add to this, but for what it's worth ...
- I think the composition is great
- Would be nice to see it at a higher resolution (don't be afraid to post images up to around 1500 x 1000; at least 900 x 600 in any case)
- Possibly a wee bit too much skin softening for my taste
- Personally, I don't like her left (but camera right) forearm looking that far out of focus - not sure if it's a DoF issue, or you've blurred it. If you're trying to de-emphasise it, I'd be inclined to do it via levels rather than via softening.
Great work, keep it up