I also recommend a sweater box type enclosure, and a t-stat for controlling the heat. The t-stat isn't really optional. But, some people like to keep their snakes in tanks for a variety of reasons. In that case, you can do various things to raise the humidity, such as covering part of the screen top, using a bigger water bowl, using a different substrate, etc. If your snake is having bad sheds, put in a humid hide when she goes into her shed cycle until you have the humidity issue straightened out.