Simply putting them in the female folder doesn't seem to cut it, can anybody help me with this? Or if you would like to challenge yourself and recreate them, here they are:
https://imgur.com/a/vo3RH

Also, I've download some cards from here, placed them in the correct folder, but I can never load them in the character maker, why is that? Normally missing mods would just make the character look different in your game, so I don't think it's that. Then I thought it might be that I have full character storage, but then I created a new card and it saved just fine. Can anybody aid with this?

Thanks in advance,
Gruwen

As far as I know, you can't convert PlayClub cards. There's too much difference in the values used.
If cards aren't showing up in the character maker then those images probably aren't cards. Make sure they're not scenes or anything, and probably the best you can do is to leave a comment to the author and they check it.

However, I can see that being the case with some of them, but I also copied them into the new Play Home trial and they showed up there (not all, but some).