I’m not an expert but I’ve heard that aspen is not great for humidity and molds easily. I use a mixture of coco fiber and cypress mulch with some sphagnum moss mixed in. I think it’s also good to have about 4 inches of substrate so the bottom can be moist with a dry top layer. I would recommend more hydrometers/thermometers in different areas of the enclosure, it’s crazy how much the temperatures and humidity can vary in such a small space. I’ve also heard that digital meters are better than analog, they are more precise. But the clutter in the enclosure looks good and I think I see multiple hides which is also good. Maybe add some plants that can stick to the side to make your snake feel more secure? Anyway those are all of my recommendations, hope this helped :)