In the first part of the license it says it can be used in "both your free and commercial projects" yet you have tagged the asset with the license CC-BY-NC-SA 4.0 which literally prohibits commercial use see here:
https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en
the CC-BY license also contains anti-DRM clause which unless wavered means it cannot be distributed on Steam or Apple stores which again defeats the point of allowing commercial use, Please consider using just your own license where you set the terms.
Christmas pack (gifts, christmas trees, snowman) Pixelart / Pixel Art sprite Top down christmas RPG » Comments
No problem, although when you press "More information" it still shows: Creative Commons Attribution_NoDerivatives v4.0