Your way is also good. Add your name too..
ONE SOUL SERUM helps to unite at soul and mind level to people who receive this energy. So even your name to be included, because they have to unite with you.
Another way is write your own name and all relatives/friends in a circle. Say ONE SOUL SERUM 3 times and keep on this EC.
When you are away, just imagine that circle or give it a name(Maybe EC Relatives) and say ONE SOUL SERUM 3 times to my EC Relatives and keep it aside for 30 min.
Read more about ONE SOUL SERUM wonderful ways of working here.