Light: Young creeping vines will get crispy in full sun, so make sure to pick a shadier spot.
Water: Keep the soil damp to the touch in summer, and let dry on top in the winter. It's often easiest to water a creeper from the bottom of the pot -- let the plant stand in an inch or so of water overnight, then let drain and dry.
Humidity: Ivy plants prefer higher humidity. A shower room is a good spot, or they're happy with occasional mistings. Tradescantia are happy anywhere.