Just to add to Jessica's really good advice. The other prep you can do is to consider the structure of your presentation and research tips/guides for presenting virtually. These can make or break a presentation and apply regardless of whether it is a pitch or related to commercial law.
A few things to think about before you get the brief:
- Do you know roughly how long it will be? 10-20 minutes is not a long time!
- How will you guide your audience through the pitch? You can map an outline of this before knowing the topic. This is as important as getting the content right. If your structure is poor the content of your pitch won't land.
- What is your personal style? I've worked with great presenters who have ranged from talking through a prepared speech word for word to others who captivated an audience using only 5 photographs that they ad-libbed against. Consider a style that gives you confidence rather than gets in the way of what you want to get across.
- Will you use slides? If so, how many? You don't have to use slides just because other people do. Bad presentations tend to use more slides than they have time for, have too much text on each slide or use slides when they aren't necessary.
- Will you allow questions throughout or at the end? How will you prep for answering questions?
- Will you have an interactive element or a quick breakout discussion? Ask the right discussion question and it can be a great way to show you know a client's market/business. Do this badly and it can be awkward.
- How will you adapt to presenting virtually?
- Are you confident screen sharing over Zoom/Skype/whatever platform you have been asked to use, and have practiced this?
- Consider, what do you gain/lose from presenting over the internet compared to being in a room with people?
Good luck!