yes, you want to put it in the plastic baggie for at least several weeks at the leaf itself has no roots and may dry out. i did mine last march-may when my humidity was up towards 70% and kept them in baggies anyway; turned out alright.
where are you located? i have a pretty good garnet red NOID at home you can have a leaf from, if it's feasible.
oh duh, MO. well, maybe not feasible yet.