Did my baseball swing get better? (video)?

You do seem to be leaning a bit too much on the ball. As a result your more likely to hit groundballs only. Try to stay back on your back leg and take the stride like your just putting your foot down on your tippy toes with a little tap. And when the ball comes, let it rest than swing. Plus, if you really want to start performing try not to think mechanical, think mental and think of nothing when you are at the plate.