I understand that you've been blocked for three days due to adding candidates for Deletion to pages as well as removing their existing categories. Keep in mind that adding CFD doesn't mean you have to remove the other categories as well. Also, if you're unsure whether or not a page has to be assigned to CFD, it's okay to ask an admin or to just add it to the "Page Needs Work" category.
I've reduced your block to 14.5 hours since it appears that there was no prior warning from the blocking staff member. If you have any questions, please reply to this message or create a new message on my wall. Thank you for your contributions.
ADD: If you want a page to be deleted, use the CFD template (called Delete) rather than only adding the category.