Set the signature for new messages and for replies to the name of the signature you just created.
If you have multiple email addresses configured be sure to set the signature for the appropriate email address. You can assign this email signature to be used with all your email addresses or just one.
To do this, select the Email account from the drop down within the 'Choose default signature' section and set the 'New Messages:' and 'Replies/forwards:' to the name of the signature created.
Then just click 'OK' to close all open dialogues and return to your inbox.
From here you are all set to start composing emails.
