How to promote yourself when speaking at an event Doing It For The Kids

"What is an appropriate level of self promotion when doing a talk?

I have been asked to do a talk on Imposter Syndrome for 150 female leaders in an organisation. Naturally I don't feel in the slightest bit confident I am able to do this or the right person for the job, but given the topic I feel that is exactly why I should, and so for that reason I am in!

I will be one of four people contributing and my slot will take up nearly half of the online event, including the break out room workshops I will help shape. I was initially told there is budget but that hasn’t proven to be the case — I won’t be getting paid.

I therefore really want to make sure that there will be some additional work to come from this event. This will be my first event like this, and so I’m unsure of the etiquette when it comes to self promotion....?

Any advice on how to get the balance between being the ultimate inspiring professional speaker, whilst also not wasting the opportunity to self promote would be greatly appreciated. Should I just trust in the process that work will naturally come from it?"