I use the Hubspot free email signature generator – https://www.hubspot.com/email-signature-generator to create email signatures with embedded links, a LOGO and headshot.
There are a number of templates available – I recommend using template 3.

Insert your signature details – linking to your territory specific social media handles, LinkedIn profiles and unique landing page (if applicable) – these will all embed into the signature when generated.
I use the following style presets:

For image uploads – these need to be stored in an online drive, such as google drive – for a profile picture, I used the following CANVA file to reshape into a circle. Share> Download as PNG > Transparent background.
Upload to your online drive, and ensure the sharing permissions are set to available to anyone with the link.

Create signature and update in your outlook.

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