Just needs more experience is all. You're not going to be a buttery smooth worker after wrestling for a total of 3 years.
Yeah hopefully it comes with time. He's also all about flamboyance but his promos sound really generic. He needs to extend his character to how he delivers his promos. The last thing I would want is for him to go full homoerotic menace but there's room to add more flamboyance without going over that line that will certainly get crossed when he gets called up.