I just went through a live on-screen application demo, some things I learned, some things I knew already.

• If the meeting is very short, consider doing a demo using screenshots on slides. This prevents losing time in technology glitches and the less interesting part of your app (logging in etc.). Have a live version of your app running on your machine as a proof that the real things is there.

• Rehearse the exact scenario you will be running. Which demo users will log in, what will they do, in what sequence. Again, this will eliminate technical issues, but also makes sure your story fits with the overall pitch (no dead ends, no duplications, repetition of things you already explained using slides).

• Make sure that the app looks right. For some apps, this is a full screen rendering on a very large monitor, for other apps this might be rendering of your app on a smaller screen on the big monitor. In the latter scenario, remove visual distractions from your laptop desktop.

• Pay attention to the details of your demo environment. Add avatars for your demo users that fit nicely with your app colors. Fill out optional text (even with lorem ipsum) that might not be crucial to your app, but make the whole screen look more balanced.

• Laptop track pads feel strange when you have to look at a giant monitor at the other end of the room. Consider bringing a mouse so you can ignore your laptop all together, or mirror your screen.

• Pay attention to your monitor configuration when using dual screens. If the big screen is to your right, make sure your computer thinks it is there as well. Every time you have to “think” where your mouse is, you take your attention away from the pitch.

• Think of your “background screen”, what is the view of the app you want to be sitting on the monitor when the demo is not really running. A blank login screen, or a blinking cursor of your localhost server does not do much to pitch your app…