A lot of players slightly 'swoop' the stick across their body. Like a left swings the tip from left to right,
and a righty goes right to left (hence sending the cue ball to their left a little).
There are a bunch of possible fixes, some will feel ok, some will feel really weird.
For me, the fix is to curl my back hand inward a little. Other players might stand further away
from the cue and angle their bodies more. Another might try rigidly locking his elbow and tucking
the whole arm closer to the body.
Try a bunch of these until you find one that works.
For actual aiming of the shot, I think a useful trick is to line up the bottom of the cue ball
to the bottom of the object ball. Then imagine shooting a simple stop shot that doesn't move anywhere.
and a righty goes right to left (hence sending the cue ball to their left a little).
There are a bunch of possible fixes, some will feel ok, some will feel really weird.
For me, the fix is to curl my back hand inward a little. Other players might stand further away
from the cue and angle their bodies more. Another might try rigidly locking his elbow and tucking
the whole arm closer to the body.
Try a bunch of these until you find one that works.
For actual aiming of the shot, I think a useful trick is to line up the bottom of the cue ball
to the bottom of the object ball. Then imagine shooting a simple stop shot that doesn't move anywhere.