What are the Terms of Use for your freebies?
My standard Terms of Use covers usage of the free doodle/clip art packs, alphabet sets and digital papers available on the blog, so you can use them in your educational resources (for sale or offered for free) under the usual conditions.
My colouring pages, templates, printables and craft activities are licensed only for personal use, you may not use these in any product for sale or for free distribution.