[you can totally paint]
Let me start off by saying that I really don't know anything about the technical aspects of Art and Painting, however I can youtube anything sister-friends(or brother-friends, you can prophetically paint too!)!!
I still consider myself to be a Artist,you can too! If you think that God is telling you to paint then go to walmart and get some non fancy supplies, (check this out) put some worship music on, (playlist here) and put brush to Canvas and see what happens!
When Holy Spirit first told me to paint, I was like ummmmm...... "Are you sure??" then I was like... Wait of course he knows! So if you have ALL OF THE PAINTING KNOWLEDGE or NONE OF THE PAINTING KNOWLEDGE, if Holy Spirit is telling you to paint then paint if he gives you permission then that is all you need!