Kevin, if you’re right handed the usual flinch shot goes low left. For awhile use two hands and try for a “surprise break” on each shot to try to eliminate anticipating the shot. Once you determine that the sights might need adjusting, look up sight change formulas on the internet and then use a brass drift to move the rear sight in the direction you want the point of impact to move. Don’t dry fire your Star unless you use snap caps or you can break the firing pin.
All the best - Dave