At 5 or 6 months your baby will begin to use her arms to reach in front of her. Be sure to provide lots of opportunity. What is it that she will want to reach for most – a favorite toy or perhaps you nose?
Place either yourself or a toy at a distance where your baby can focus on it and reach for it and possible grasp it. Do this over and over and try placing the object where she has to reach with her right hand, then her left hand. It will be interesting to see if there is any difference in the control she has with one arm versus the other.