I think this is a great piece. It's always hard to do a portrait when the client has a lot of input.
I try to discourage them from helping me plan, but sometimes they are quite particular. Anyway, you did a wonderful job with it.
One suggestion: since your light source comes from the right, the flag behind them (center and left) is correct to look light because the light would hit about there. But your right side and top right corner could logically be darkened and it would balance the painting out. Just my opinion.
Keep up the good work.