Try this simple back earring for a grand look during occasions.
Pen to mark on OHP sheet
OHP sheet small piece
Stone or pearl lace as required
Cut a square piece in cardboard and punch a hole in it. Now wear this piece along with your earring and make a marking around your ear to know the size. Then cut accordingly in OHP sheet as well.
Stick pearl lace or stone lace as per the design required. I have put in 2 pieces of 2 stone lace bits together to make a square. Have stuck 5 similar pieces all around the cutting. Use only such glue which will become transparent when dry so that it looks neat when worn with the earring.