Now my avatar is even more sinister.
EDIT: Step 1: Right-click the picture of the moustache on the OP and hit "Save Picture As..."
Step 2: Go into Paint.
Step 3: Open your avatar.
Step 4: Click "Paste From..." at the top-left corner of the screen.
Step 5: Paste the moustache.
Step 6: Align the moustache with the upper lip of your avatar. If your avatar is not anthropomorphic, you fail.
Step 7: Save.
Step 8: Set moustachioed avatar as avatar in Blockland forums.
Step 9: Go to the "La moustache" topic in the Off-Topic board.
Step 10: Comment.
EDIT PART DEUX: 6th in command?