Pull the thread out of the bottom and attach another button/bead. And then push the needle back through the centre
Make sure the needle comes out through the button eye and pull tight.
The amount you pull the thread tight determines the shape of the biscornu.Repeat pushing the needle in and out of the biscornu to secure the buttons/beads and adjust the shape to your liking.
When satisfied bring the needle out through the bottom but not through the button eye and tie a knot around the base of the button to secure. Wrap a little of the thread around the button and then secure with a final knot. Trim the excess and tuck the end under the button.