The Tag Fairy got lost in a prior software change, and to my knowledge has not returned; it's been 3+ years of no tags, sorry.
As for your avatar picture, you are welcome to upload anything you'd like. Click on your username in the blue bar at the top of the page and you should be able to click on the "green P" that is defaulting and change it. You can also change the phrase below your username, that is also in your profile settings as "Custom Title." (some posters have put their old tag in this space, it depends on length)