Note that "Permission required for commercial use" is not compatible with the chosen license "CC-BY", the latter requires only attribution and allows commercial use without any additional permissions (permission is already granted by your choice of the license). If you need to impose commercial use limitation, then you should use CC-BY-NC license instead or a custom license (note that neither of those are among licenses accepted at OpenGameArt). See https://www.gnu.org/licenses/license-list.html and https://opengameart.org/content/faq#q-proprietary for more details

Thank you!