Board Thread:Wiki Help/@comment-27442027-20151221133629/@comment-10227639-20151221134229

I dunno about the second, might have something to do with the autoconfirmed user group.

As for the first:
 * 1) Go to your userpage.
 * 2) Hover your mouse over your current avatar.
 * 3) You should see a "edit avatar" text with a pencil below your avatar. Click it.
 * 4) Upload your avatar from there.

And you're done.