Why my signature picture not showing in my email

I have a form that has a signature field but after submit and i check on the email.. there are not showing. Please fix that problem and take a photo too..

Hi Tri - I can't seem to locate an account associated with your email. Could you please share with us the name/URL of the form on your screenshot so we can check?

Guide: Where-to-Find-My-Form-URL 

Looking forward to your reply.