Step 1: Materials
cloth or paper (anything can fold and sew will do
sewing tools or stampler
thick thread or electrical tape
You'd better clean your leaf first.
Step 2: Trim Your Leaf
Don't remain too much. About 40 cm wide and 35 cm long (not include petiole) is enough.
Step 3: Suture the Edge
If you're as lazy as me, you can use your stampler.
I don't know how to sew the fan so you can seach for images about it (sorry, instructables can't dispaly chinese charaters).
I cut the edge of a pp bag (woven bag), then stamp them to the edge of leaf.
It takes about 60 stamples.
Step 4: Treat the Handle
Ancient Chinese twine thick cotton threads round the handle.
But I couldn't find so many threads so I used electrical tape.
After that, cut surplus part.
Step 5: Pressing and Dehydration
And some time later, it will dehydrate and turns yellow. It will be much lighter and easier to use.