EASY THINGS THAT CAN IMPROVE YOUR SHOW IMMEDIATELY.
~Engage the audience. Don't take long looks at your phone or notebook for prompts. Don't stare at your feet or off to the side. Look around at the room and into the faces of the crowd. It need only be a moving glance, but do so. You may not want to engage each individual face but you want them to take a look at yours.
~Speak up, don't mumble. If they can't hear you and understand you it won't be funny.
~Get your first laugh as quickly as possible.