Hi, your assets are great! I'm wondering if you could choose a license for these. Based on your other comments, I think CC BY-SA would be a good choice. Here's what it stipulates:
This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format, so long as attribution is given to the creator. The license allows for commercial use. If you remix, adapt, or build upon the material, you must license the modified material under identical terms. CC BY-SA includes the following elements:
BY: credit must be given to the creator.
SA: Adaptations must be shared under the same terms.