Joanne,
This sounds really good to me. Everyone has different tastes and in my songwriter meetings (one of our young ladies just won a major Nashville songwriting contest this week and a got music deal by the way

) almost everyone has a different opinion on things.
But I love what is there. The guitars and the vocals are great.
I find the strings and the hard panning of them to the right mildly distracting because I think it dilutes the purity of the vocal and guitars.
When the second acoustic comes in hard panned right it sounds fine to me.
Maybe just a wee bit of cello or real track fiddle/violin, very slow??
The authentic wooden-box sound of the acoustics and vocals don't completely mesh for me with the synth-y strings.
For me in mixing (and I am just one person) my first thought is always: "Does the song really need this track?" If the answer is "maybe" then to me you have to take it out.

I think the strength of your vocals alone and acoustics carry the day and you should be careful not to distract from them in any mix.
The balance sounds great though and the tone is very warm.
Does that help?
