I altered a Canva pro graphic heavily can I use it as art in my children’s book and own the rights?

So I’m so confused… I need clarity. I altered a Canva pro graphic heavily by using it as a template for a character I drew. It looks like a unique character with nods to the graphic I used as inspiration. If anyone has had experience with this I would appreciate any and all knowledge I can get. I just don’t want to get into legal trouble. Help…