It's better to hone your messaging and speaking style by practicing here, than at paid gigs right off the bat. You should also reach out to organizations or associations that you belong to or have a relationship with - this is a great way to start your speaking career.
For branding purposes, consider that most speakers fall into a speaker type category. Here are some examples:
- Inspirational Speaker
- Motivational Speaker
- Educational Speaker
- Leadership Speaker, or
- Sales Speaker
Typically, you will want to build your brand under one of these labels since event organizers often look for speakers in these categories.