Controls :: How To Add Header In Word File Using DocX Library

I am using DocX Reference and there is problem in generating image in the header ..how to add Image Header??

// Create the document in memory:
var doc = DocX.Create(fileName);
using (MemoryStream ms = new MemoryStream())
{
//if(Branch=="SFA"|Branch=="SSA")
//System.Drawing.Image myImg =Properties.Resources.SerbaAntik;
//if(Branch=="SBA"|Branch=="SMA")
//System.Drawing.Image myImg = Properties.Resources.Sarana;
//if(Branch=="SPA"|Branch=="SSG")
System.Drawing.Image myImg = Properties.Resources.Kharisma;

[code]...