0.75 euro for the lace of 0.5 m and 0.125 euro for the button,and for the fancy collar I needed also a vintage pendant for only 4 euro.
Let me show you first what I made:
Firstly,you will need 0.5 m of lace(better measure it)
Secondly,sew the lace on the edges.
Then,sew the button to the lace.
So,here is the magical result that I got after only 10 minutes.