Virtual presentation tips

Two things dominate how you look on a call. Both are free, and most people fix neither.

How do you set up the camera and the light?

The first is camera height. Seated, your eyes are about 32 centimetres above the desk, and a laptop lid camera is about 12 centimetres above it. At a typical 55 centimetre working distance, that 20 centimetre drop is a downward gaze of 20.0 degrees for the entire call. Everyone else reads it as you looking away. Put the laptop on a 14 centimetre riser, or a stack of books that high, and the drop falls to 6 centimetres. The angle falls to 6.2 degrees, which removes 13.8 degrees, or 68.8 percent of the problem. A 20 centimetre riser puts the camera at eye level and the angle at zero.

The second is light direction. Take one measured desk. A window behind you at 1,150 lux against a front key of 320 lux gives a back-to-front ratio of 3.59. That's the silhouette everybody has seen on a morning call. Turn the desk to face the window and the ratio inverts to 0.28, an improvement of 12.9 times. All it cost you was moving a desk.

Framing is the third thing, and it's nearly free. On a 1,080 pixel frame, the working target puts your eye line one third of the way down, at 360 pixels. With a head about 0.37 of frame height, 400 pixels crown to chin, the crown sits 160 pixels below the top and the chin at 560. A common laptop framing has the crown at 86 pixels and the chin at 486. That puts the eye line at 286 pixels, 74 pixels too high. To correct it, add 74 pixels of headroom. In the room, that means tilting the screen back a few degrees or raising your chair.

What equipment and meeting settings are worth it?

Now the equipment, in the order it pays. First an external microphone or a decent wired headset, because audio quality drives perceived competence far more than picture quality does. Next, when the meeting matters, a wired connection. Then, and only then, a camera. Buy a camera before fixing its height and the light behind it, and you've spent money to be badly lit in higher resolution.

Two settings inside the meeting software are worth finding once and then always using. One is the self-view. Hide it after the first thirty seconds, because watching yourself changes how you speak. The other is whatever keeps the participants visible while you present. Presenting into a wall of your own slides removes the only feedback the medium gives you. Feature names and defaults differ across platforms and releases, so find them in your own tool well before the meeting starts (confirm against your platform's current documentation; checked September 2026).

Screen-share hygiene, and the arithmetic of the notification

A single message banner arriving mid-share is the most reliable way to end a serious meeting. The content is rarely the disaster. The interruption is.

You can compute the chance. Take an ordinary working day of 47 arriving messages across 8 hours. That's 5.875 an hour, or one every 10.2 minutes. Treat arrivals as independent, and the probability of at least one during a share of length t follows directly.

A 45-minute share leaks at least one banner 98.8 percent of the time, and three or more 81.6 percent of the time. Even at twelve minutes the odds are 69.1 percent, so expect a leak by your second share. Turning on do-not-disturb takes four seconds and moves the expected count to zero. That's about the cheapest insurance you'll ever buy.

What belongs on a screen-share checklist?

The checklist that survives a real morning:

1. Do-not-disturb on, at the operating system level and inside every chat application separately, because the two are different switches (the names and grouping of these modes change between operating system releases; confirm on your own machine, checked September 2026).
2. Share the single application window instead of the whole screen, so a stray notification, a calendar reminder or a file name in a folder never enters the frame.
3. Close every document that isn't this one. The window switcher shows up in more shares than you'd think.
4. Clear the browser tab strip if a browser is on screen at all, because tab titles are legible and are sometimes confidential.
5. Take one full screenshot of your own share before the call and look at it as an outsider. Everything embarrassing is visible in that screenshot.
6. Know the stop-share key before you need it, and use it deliberately at the two moments named in the read-out plan.

Presenter notes deserve their own line. Any tool with a presenter view puts your notes on your screen and the slide on theirs, which is what you want. It also fails in one specific way. If a second monitor disconnects, or you start the share from the wrong window, your notes go up on the wall. Test the arrangement once with a colleague, and keep your notes free of anything you wouldn't read aloud.