Not sure exactly what are your concerns but you can download everything and have them for personal use. Edit them as much as you want too.
People upload the cards they make here especially for others to use them.
Just be sure that the card you are downloading is for the exact game. There are lots of cards for playhome without tags, and they won't load in honey select. Also Honey Select and Unlimited.
But that's it i guess, download whatever you want to your heart's content.