First decide on the size hexagon you need.
You will need one of fabric to be embroidered
and whatever you want in the middle.
These are the same size.
Choose backing and make it 1" bigger all round.
Choose embroidery or applique or whatever and work that part.
Put all layers together and fold over twice on alternate edges; pin and iron in place.
Turn other edges an sew all down.
add loop or ring to centre of top for it to hang.