How do I add my signature to the document, then send it to the recipient to sign themselves.

Create a new envelope, add yourself as Recipient 1 with Signing Order 1, add Recipient 2 as signing order 2 ( I always use signing order when sending envelopes for ease of use in tracking), add email body and subject, add fields (Signature blocks for Recipient 1 and 2) , Send.

Typically if you are creating the envelope to send to yourself and are logged into DocuSign using the same email address as the Recipient (you) then it will prompt you to "Sign Now" after you select Send. Once you sign and finish it will route to Recipient 2.