Koala Cards Copyright status

For this design for koala cards i used copyright assets such as the font and colours, the design of the koala itself was created completely from scratch by however i did use reference photos which are shown but don not show any resemblance in my finished design. The design is copyright free but if someone was to use it credit should be given where necessary.

Reference-https://listas.20minutos.es/lista/curiosidades-sobre-el-koala-238866/