You're free to use my assets and pack them into a bigger set but I would absolutely appreciate credit, and you cannot license them CC-BY 4.0 as mine are CC0 licensed. Meaning you can't put a more restrictive license on them. Thanks!
Got it! Thank you for highlighting this, I'm a noob at licences - I've now fixed the description and added you to the Credits!
No worries! Thanks for fixing it and well done, this is a very good pack!
