It’s rare for something to work perfectly the first time.
Try out the virtual software, sharing your screen, your camera, and any other features you’re planning to use in advance of the call.
Consider sending instructions or a tutorial to participants in advance if there are interactive features you want them to use or build time into the agenda to get comfortable with the tools.
Check settings for the meeting, to ensure all features you want – from whiteboards, waiting rooms, breakout rooms, annotation, etc – are enabled or disabled.
Consider having a colleague co-facilitate so that one person can keep track of technology while the other leads the meeting. Or, ask a tech-savvy participant to play that role.
Nothing’s more surprising than having something not work quite in the way you anticipated with six (or sixty) other people on the line.