Don't be afraid of getting stuck in a stutter. Sure, you immediate reaction might be "oh shit! They're all staring at me!" This will happen. Nothing you can do about it. What you can control is how you project yourself to your audience in that moment. Don't break eye contact. Stay engaged with the audience. They know you stutter, so put the pressure on them to react to you. Don't use secondary tricks like tapping your foot or doing something with your hand. Stand there, command their attention, and don't give it back until you're done. It's not their time to judge you, its your time to dare them to judge you. Crush it.