Hi there! Welcome to the forums!
Everyone seems to have pretty much covered the feeding issues, but I wanted to touch on the humidity and temps. Like MrsMac says, you want that humidity quite a bit higher than it seems to be, and you want a good temperature gradient, rather than just one ambient temp throughout the whole cage. But if you're reading these with those little analog dials that stick to the side of the tank, you could very well have NO idea what your true humidity and temps are. Those dials are notoriously inaccurate.
Walmart has an "indoor/outdoor" unit that digitally measures temperatures on both sides of the tank (warm and cool) and also measures humidity. It also keeps track of the minimum and maximum readings, so you can see if the temps are dropping too much at night, for instance. The whole thing is only about $15, give or take a buck. It could be the best $15 you spend on your snake.