Talk:Avatars/@comment-2001:5B0:2B7D:ABE0:280:AEFF:FE21:E0BE-20170827195627/@comment-25646419-20170827200732

As stated in the notes section for the Youtuber avatars:

"Beta had ended on December 15th of 2014. Players who had created accounts before mid June of 2015 still had received these skins, with the exception of TheTeshTube."

There is no way to obtain the skins now.