This is a good way to get the idea. Get in a normal shooting/fighting stance with your normal two handed grip. Now, drop your weak side hand. I put my non shooting hand over my chest, with my hand in a fist.
Make sure to include all the muscles in your upper body to support your shooting hand. This will add a lot of stability and alow for faster follow up shots. This is known as muscle recruitment.
I don't like the tilting method, even though a lot of well known shooters use it. At a distance the tilt will not allow you to adjust for bullet drop for one thing. There is the argument that the tilted method is more "natural", but holding a gun in your hand is not a "natural" act in it'self. This may seem minor, but tilting your weapon inboard has the the ejection port facing the wrong way. The weapon is designed to be shot straight up and down. With the ejection port in the inward tilting position the ejector is working against gravity(moreso), and the following round is being fed at an angle. This could potentially cause a malfunction. I personally like to shoot in a way that reduces the possibility of these types of errors as much as I can.
I am no expert, and this is just my opinion, so take it for what it's worth. I'm just some guy on the internet. This is the method I was taught in the classes I have taken, and it works well for me. YMMV. I don't pretend to be the final authority on anything.