If ever anyone says they want to study art at Oxford I tend to advise "go to art galleries". You have just turned that rather narrow perception on its head.
For one thing, you can't go to galleries during Covid but brilliantly, you have been able to look at, and even speak to, artists online.
I was quite amazed that you mention "Create Dangerously" by Camus. When I think of Camus, I tend, as a linguist, to think of La Peste. How interesting!
Again for Oxford you need to be reflective. You are not just "looking at pictures", but you are considering what art means and does for you. You are an avid researcher (like all Oxford offer holders!) You are intellectually curious and want to "try out different things". It's that academic bravery that wins you brownie points at Oxford.