As long as the humidity is fine in your snake's enclosure they'll get the job done in due time. Every snake is different but likely by morning you'll have a lovely freshly shed snake. We have a couple of wonderful stickies here.

This first one by Daniel is on the shedding process....

http://www.ball-pythons.net/forums/s...ad.php?t=28794

This next one by Christie is a great help if the shed goes wrong and you have to help your snake out....

http://www.ball-pythons.net/forums/s...ad.php?t=43403