Normally you want your center tweeters and left/right main tweeters at the same level. However, this is not always possible. It appears in your setup you may have been restricted by your ceiling height, which required you to have your screen to low. Usually, when your in the seated position, your eyes should be 1/3 or 1/6th of the screen height, up from the bottom. Which is normally puts the screen about 38" to 41" off the ground.
Another option is to mount the center above the screen, angled downward which some have done with success. Good luck and looking good...
