Log into the Letsignit platform, click on the "Signatures" tab and then, on the signature you want to modify.
Click on "Open in designer":
Drag and drop a picture box proposed on the left side of the designer anywhere in the signature.
Once your picture imported, you can modify it as you much as you want with the "Style" and "Settings" options available on the right.
Do not forget to save your new signature ! ;)
#signature #add #picture