Gmail Signatures Step-by-Step
Step 1: Go to Gmail Settings –> Labs and enable “Canned Responses” as well as “Inserting Images.”
Step 2: Compose a new message in Gmail and create a signature just like you would compose any other email message. Be creative!
You can either upload logos and icons* from the computer or use images that are already on the web. I suggest the former style as that will permanently embed the image into your email signature.
[*] You can find images of icons through Google Image Search. Go to Advanced options under image search and type 12 for height and width (use 16px if you are looking to add slightly bigger icons). While optional, you may also select the filetype as PNG or GIF for transparent backgrounds - see example.
Step 3: Once your happy with the formatting and layout of your new “HTML signature,” go to the Canned Response menu and Save – give some logical name like “Personal” for a signature that you want to attach to your personal emails