Many lifters learn the bench press from powerlifters. And powerlifters certainly know a lot about it. But remember, their goal is to lift the most weight possible for one rep, and they often use special lifting shirts.
If your goal is to build size as well as strength, and you lift raw (without a stretchy lifting shirt), then your pressing form will be different. Here's a quick video lesson.
One of my central operating paradigms is the realization that all methods, devices, philosophies and techniques involved in strength training have specific benefits and drawbacks. If your training lacks sufficient diversity, you'll accumulate the drawbacks and habituate to the benefits. And that ain't good.