Use soil (humus based) and keep moist, but a little dry will do too, but only for a day or two! Also do not let it under the sun (if yes, one hour at the most). It also needs some relative humidity and not let it over 25oC! Leaves will be the indicator! Do a little googling and you will find more info!
True, I got one for me and one for a friend of mine! hehe... I kept the big one (more or less 10cm ion diameter) and I sent the smaller (approx 4cm) to my friend!!!