Some updates to creature skins

[WainPetopia]

I don't have permission to create a pull request, I don't think, so here are the additions:

listfileupdates.diff.txt

[bloerwald]

There shouldn't be anything preventing from making a pull request. It should be open to everyone.

[Marlamin]

Basically, fork this repo then push your changes to your fork. When viewing your repo there should be a "New Pull Request" button which should allow you to open a new pull request on this repo with the changes you've made to yours.

[WainPetopia]

Thanks for the explanation. :) I got it to work