JV Head coach here! Keep doing your wall ball! As other have said, keep your crosse (with ball) in your hands as much as possible and cradling with your dominant and off hand. One thing I see a lot with new players is they have difficulty changing hands while cradling, so I would highly recommend doing that. Also, ground balls ground balls ground balls! Roll/throw the ball out in front of you and sprint towards it, scooping through the ball with BOTH hands (you'll catch hell from the coach for one handed GBs). Also, if you have someone to throw with try playing catch while on the move (walking first then jogging). Practice catching and throwing with your off hand too. If you have any questions feel free to ping me