Gather the leaves in a way that will both look after the plant AND give you the best weaving.
Know the most efficient way to prepare whenu (weaving strips) so they are easy to weave with.
How to soften the leaves so they're easier to weave with and your finished item looks good.
Weave something simple from harakeke (NZ Flax) - or from firm paper or soft plastic strips (if you don't have access to flax leaves).
The basics and the nice-to-haves.