Well if some articles were mostly copied, you should always make it clear what is copied and what is your own opinion or writing - and then add links as sources where you have copied the texts from.

You'll get hit hard if you're plagitarising, even unintentionally, but you should really focus on that.

You can fix this by creating better posts and working the way back up :) And not doing anything similar again. It'll hit you real hard, especially if you have been "caught" already before.