can I keep and post my art of human beings on social media if I made it in a time I didn't know it was haram?

I used to draw pictures of living souls, but when I found out it wasn't permissible I stoped. but I kept them and still post my art on social media. I want to know if I should keep them, destroy them or if I can sell them. I don't want to do anything that's not permissible but if I could keep them I would love that.