You need your favourite hook (mine is 3.5mm), yarn, scissors and tapestry needle.
Make a chain to your desired length, finish off, leaving a length for attaching to the top piece.
Make a flower or star or whatever you like really and attach it to your chain with the tapestry needle. I added a bead to the end of mine but getting them to stay on was/is a work in progress. I don't want a big knot at the base because I find it a bit uggs, but haven't come up with a better plan yet.