return this instance through interface

[mce]

Hi,

i want to return the current instance to my interface in the implementation class. Anything wrong with the following? in terms of design or ..?

 public interface IMyInterface
    {
       

        IMyInterface GetInstance();

}

public class MyInterface: 
{
public static MyInterface Instance = null;
 public MyInterface GetInstance()
        {
            return Instance;
        }
        public MyInterface()
        {
            Instance = this;
        }
}