You need air dry clay and think metal wire.
Make a base from clay and put two wooden sticks in it. Interweave them in the upper part and make room for the neck and the head. Cover everything with clay and make sure the angel is firm and steady. Be careful not to make two thin elements because they will crack when drying.
With the aid of the wide shape wings, aureole and hands. Place them on the ready doll. And now you just have to wait a day to dry up.
We like the angels in white, but if you want you may color them.