Yes, providing direct patient care is extremely helpful, especially phlebotomy. (I have had someone get their treatment delayed because we could not get a competent person for putting in an IV.) Don’t compel yourself to write about it if you don't feel comfortable, though I suspect after a few hundred sticks, you'll be able to talk about it.
Submit a proper WAMC in that sub forum. Advice on Pre-writing forthcoming. First impressions from me: 👍 👌