Your consistency will improve when you are able to focus on the ball as it contacts your racket.  You should watch the ball all the way to contact.  Many players repeatedly say to themselves, “Watch the ball!  Watch the ball!”  However, they still don’t watch the ball until contact.  So how can you train yourself to concentrate more on the contact point? 
 

I have a little homework assignment for you.  Stand 2 feet away from a 5-gallon bucket and toss a penny into the bucket.  Easy right?  Now stand 2 feet away from a gallon of milk (with the lid off) and toss a penny into the milk container.  This requires more aiming and more focus, right?