Super engaging characters! I enjoyed interacting with your world (first with dialogue, then with Dorian's inner thoughts) and I could feel him spiraling into insanity as his thoughts became more fragmented. If you want to continue working on this: I think there's certain parts at the beginning that still feel exposition-y, and could be cut down just a tiny bit more. Towards the end, I think you struck a great balance of what details are most impactful to describe (great character description and painting metaphors).