PEOPLE WHO WANT TO DO BUSINESS WITH YOU WANT TO SEE WHAT YOU LOOK LIKE.

People who want to do business with you might want to see what you look like. Regardless of your expertise, a bad photo sends the message “amateur.”
— Enterpreneur

If you are solopreneur or run a small business, our bet is that your brand is an extension of who you are. For this reason, having images of yourself online is crucial because, in general, people really appreciate meeting you before they do business with you. Your profile image is a tool that can be used to connect with your clients and create that initial bond that makes for successful business transactions. If you are your brand take charge of your narrative and start showing your prospective clients who you are. Don’t leave if for them to guess because they can’t find an image of you online.

It’s okay to start small. With just one professional photo of yourself you can start building your online presence by showing your face on your social media profiles. Yes, forget selfies. Those are excellent to show friends and family how we are doing but use a professional photo for your business. Make sure to communicate with your chosen photographer the message you want to convey. You'll be amazed how much a professional headshot can help you stand out from the crowd.

Reference:

Enterpreneur.com: https://www.entrepreneur.com/article/237742