smaller water bowl and I'd not use paper towels it is a serious hazard if any gets eaten with a food item. Newspaper is safer (damp things don't tend to stick to it). What are you using to cotrol the heat and what are the temps on hot side and ambient air. i'd worry that ambient air temps with a window is too cool. Temp over humidity always don't sacrifice temps to correct humidity.

88-92 (small snakes do better cooler so 88) hot and 78-81 warm and ambient air 79-85.