Echoing what other have said, he keeps the ball FAR to long.
Probably fifteen times a game I see him carry the ball forward into the opposition half, then he slows, comes to a stop and then faces up the defender. Now he starts his shimmy / dummy move when he is facing an opposition player, all the while the pass was on but he stops, shimmy's and then passes to his nearest man.
Seemingly unbknowst to Pogba the opposition have now used those seconds to settle, organise and are ecstatic that he's faffing with the ball forty yards from goal.
He needs to move the ball faster, run off his man, collect the return balls while approaching the box, using his speed and technique to cause trouble. I get the feeling the biggest transfer fee is or has gone to his head, where he feels that he must run the show, must look good, must be the epicentre of the team but in my opinion he needs to stop being a marketers wet dream, work harder and start producing so he can be a football fans wet dream.
Other than that, he's got all the tools to dominate and blow opposition teams away.