Use any type of fabric ribbon you like. For a nice full bow use ribbon which is about two inches wide...

If the completed bow needs to be about six inches wide, then, you multiply by seven and need 42 inches of ribbon.

Get light gauge coated or galvanized wire (wire that doesn't rust).

Take the ribbon and loosely layer it back and forth into seven sections...

Then, press the seven layers together once each layer is the the same length.

Wrap the wire (~7 in.) around the middle and begin twisting the wire.

Begin pulling the bow loops towards one end; and continue to twist the wire so the bow doesn't ever loosen.

You can fasten the bow to something and start separating the loops in different directions. Trim the ribbon ends.

Optional: Fasten decoration(s) in the center of your bow with wire or glue.