hmmmm....i think you mis-understood me....you wanna put the damp papertowel in the tank under his cave/hide....

you can mist your ball python, and even give him a warm bath if you wanted...some pet stores also sell a 'shedding aid' that you can mist on them too....when i shed you can mist them about 2-3 times a day....this isnt as critical as creating a humid area for them to rest in.