I just mean, when you hold the phone you instinctively have your finger on the power button and audio button. That amount of force won’t press any down. But when you want change volume, you also press power button by accident. Instead, to avoid this i try to place my finger on the audio slider(ring, vibrate, silent slide, so not actually a button you press) that is above the power button. As that also forms a natural place to place your finger. At least with the case I’m using.

It doesn’t exactly prevent pressing volume when going for the power button though, so you have to be a bit aware of if you have the finger on the audio buttons. But for me, it most happens when I change volume, and not when using the power button.