Well, I finally sent this away and the parents really loved it, so I wanted to thank all of you who commented
Before I sent it, I fixed the weird shape of her irises (thanks Michele - I hadn't even noticed that!!) and lost the edge of her hair in the upper left. I actually ended up leaving the background dark because I thought it would go well in their house. Unfortunately, I was so excited to get it to them that I forgot to shoot any photos of it - oops!
Anyhow, thanks again for all of your help - I can't even begin to say what a valuable resource this forum is.