Could I have won?

Before deciding on how you will play you need to evaluate the position. Black has good material and pawns. The queen has no easy targets.
Objectively Black is winning. However, you have some drawing chances.

Before deciding on how you will play you need to evaluate the position. Black has good material and pawns. The queen has no easy targets.
Objectively Black is winning. However, you have some drawing chances.
Could some one please tell me how this game could have been won.
I believe I had the advantage as I had the queen