Step 1. Navigate to https://signature.nomela.com and choose your name:
Step 2. Copy your signature:
Step 3. Select the settings "gear" icon from within gmail.com:
Step 4. Scroll down within settings to signature and tap "Create new":
Step 5. Give your new signature a name eg "Moletest":
Step 6. Paste your the signature you copied in step 2:
Step 7. Don't forget to save changes; I often do: