Open your HTML email signature file in your web browser.
Press Ctrl + A to select the entire email signature, then press Ctrl + C to copy it.
IMPORTANT: Do not use your mouse to select the area, only use Ctrl + A as you may miss out on grabbing some of the code.
Open Outlook 2013 and click the File tab from your top toolbar, then select Options.
Select Mail on the left hand side and click the Signatures... button.
Click on New and type a name for your email signature, then click OK.
Paste your copied signature using CTRL + V into the signature field.
Set your email signature as the default for New messages and Replies/forwards, then click OK.
NOTE: If the email signature preview in the settings area is cutting off your email signature, do not worry, this is expected and is due to the way the signature preview renders HTML signatures. Simply send yourself a test email and you will see it displays correctly.
Close out of your settings and compose a new email. Your email signature will automatically be inserted when composing emails from Outlook 2013 on Windows.
Show an animated gif that shows where the key value is in our app, it could zoom in from the full page view to where the key button is, show it being pressed, revealing the key and then showing the key value being copied.