As a new shooter, you will go through a couple of issues. Its normal to have issues with strait-a-way targets. Then you will have issues with hard angle targets. Then you will have issues with the strait a way targets again. You will work though each of them.
I suggest you learn to move the shotgun left and right with your legs and waist. You need to learn to use your back to raise your shotgun. You must learn to do both of these if you want to become a consistent shooter!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
So I assume, your not bead checking your strait a way targets. If you are STOP IT!!!
Next the two biggest problems are, using your arms to raise the gun barrel up to the target. Which will result in your head staying in one place at times, and not moving with the gun. Which will cause you missed targets.
Or, Lifting your head off the stock to follow the bird rising. It does not take much eye movement to cause you to miss a strait a way target. Most folks can just roll their head upward, while still keeping their cheek on the stock. So its almost impossible to tell your eye has moved. The best way to check if your lifting your head. Is to keep your head on the stock until after you see the target break. Or see the target fall to the ground in one piece. Now look down your barrel and see if your two beads are still lined up. If your beads were lined up before you called for the bird. Then your beads are not lined up after you see your missed bird. You know you moved your eye during the shot. This is caused by using your arms to move the shotgun upward, or side to side as well!!!
I must confess its hard to tell if your lifting your head, or moving the shotgun with your arms. Unless you have someone next to you, watch you shoot. To see which problem you have. Because your eye will not be lined up after your miss. No matter which problem you have. But, its good to see if your moving your eye. Before you have another shooter watch you shoot. Good Luck to Ya. and keep us informed as to how your doing. Good Luck to Ya. and don't forget to break em all jeff