How to set up Email Signature in outlook
1. Go to Outlook.office.com and login to your emails
2. Click the Settings Icon

3. Select Compose and Reply

4. Click the + Email Signature and Give it a name e.g "my signature"

5. Click the Image icon as in the image above and select your email Signature that was sent to you.
6. Select the Default Signature to the new one you created and for new messages and replies and forwards

7. Click Save