Learning Pixel Art With No Background

It seems like most of the people who are very good at pixel art went to school for it or have a background in art to begin with. So this is a question for those who started from scratch with no prior training or background in pixel art.

What did you do to get better? If you had to create a learning plan for a new person what would it be? I'm trying to improve. I can draw objects pretty good just not characters or Tilesets