Hey @veronicaonlinefitness55! I just checked with Angel to clarify this — to confirm, that workshop was about how to get people in your email contact list (Gmail/Yahoo/etc.) over in ConvertKit. So, that signature example she showed wasn't actually in ConvertKit, but rather would be in your Gmail account (or whichever email provider you use). In any case, you can follow this tutorial117 to create a signature like that — I just wanted to clarify that first! ☺️
That said, if you are looking to create an email signature inside ConvertKit, we have our own guide on that here107. But to create one that looks like what's in your screenshot would likely require some custom CSS at this time (we have a guide here78 on how to add CSS to our visual template editor, or you could create an HTML template71 if you're comfortable with that). Of course, if you'd like to see more advanced built-in options when it comes to creating signatures in ConvertKit, please feel free to file that as a feature suggestion here56!
I hope that helps! ☺️ Let us know if you have any other questions.