When you hit your aerial shots does the ball scoop up to the fielders or it travels fast but finds their hands? Former would mean you are too early into the shot and latter means your point of contact is a little too late which doesn't give you the desired elevation.
If you are scoring well with ground shots, then i would recommend rotating the strike as much as you can. Sometimes it not about the shot or technique, its more about the confidence and familiarity of the pitch/bowler. I have hit a few sixes and aerial shots by picking the weaker link in the bowling attack. Every bowling attack will have a bowler who primary duty is to fill in the overs - bowl wicket to wicket, if required bowl slower but don't bowl wides or no-balls, don't offer much width on the off-side - these bowlers tends to show minimal variation in line, length or speed. Once you get a hang of these guys you can easily take them on.
* I will attempt to clear the cover fielders for full-length balls pitched outside off-stump.
* I will attempt to clear the bowlers head for full-length balls pitched on off-stump. I take my guard on leg-stump. So balls pitched on my off-stump is my natural free flowing golf like shot.
* Anything pitched on off-stump or middle and comes-in, i won't go aerial but rather stick to ground shot. I am weaker on the leg side and i have been caught many times playing a flick shot (which was caught at square-leg and fine-leg), so i prefer to keep aerial shots to my stronger areas.
This attacking mode is for the last 5 overs in a T20 game or last 10 overs in a 40-over game. If its early in the innings, i would prefer to play them on the ground and score runs. Sometimes its important to stay in and provide a good base for other players to build on it. Since you are in the top-4 of your line up, i think this is applicable to you.