The aiming method I use is a little different than most systems that I have seen. Most aiming methods have you aiming the cue ball at a contact point on the object ball. My aiming method requires that you aim a contact point on the cue ball at a contact point on the object ball. To find the contact point on the cue ball you have to do a little work. This can be done by using the well known ghost ball technique. In the diagram below the 10 ball is to be cut into the corner pocket. Using the 11 ball as a ghost ball your line of aim would be through the center of the cue ball and the center of the ghost ball which is show below with the black arrow. Pay attention to the exact spots on the cue ball and the ghost ball where black line exits the balls. Next look at the red line that goes through the ghost ball (11 ball) and the 10 ball. Visualize the curved distance on the surface of the 11 ball between the point where the red line exits the 11 ball going into the 10 ball and the point where the black line exits the 11 ball. Transfer this curved distance to the surface of the cue ball using the exit point of the black line on the cue ball as the starting point. Where the transferred curved distance on the cue ball ends is the contact point on the cue ball that you are looking for. I have setup the 15 ball in the diagram below to represent the cue ball to help visualize the curved distance and contact point. The blue arrow is pointing to the curved distance between the 2 exit points made by the green and yellow lines. The exit point of the green line would be the starting point to transfer the curved distance to. Where the yellow line exits the 15 ball would be the contact point that you would aim at the contact point on the object ball.
As you aim through the exact center of the cuball visualize the contact point on the cue ball that you obtained through the above technique and try to make it hit the contact point on the object ball. After a little practice your accuracy should increase significantly on the more difficult shots you normally miss.
Diagram 1
