is there a guide on how to raise the crature in the pot?

Mine keeps dying =.=

Feed it ETC/Equips till it sleeps
When it wakes up
Feed it more till it sleeps

There is a '?' button located in the item pot window. Click it and it will guide you how to raise your creature.

http://www.youtube.com/watch?v=9gqu3dA1YgQ

http://www.youtube.com/watch?v=Q2ZxSOxPnmw

Each imp needs 50 etcs around your lvl to fall asleep, hope that's a bit helpful, you can just collect em early and feed em through the day until you get the amount of closeness you're aiming for on that day. They sleep for 21hours, so timing exactly what you wanna put em to sleep is very helpful~

Best thing for me was to start ignoring the 'closeness will not raise for another x minutes' message. If I want closeness, I use one of those items. Otherwise, I'm just force-feeding it etc items to make it fall asleep.