How To Add A Header Image To Blogger or blogspot For A Dynamic Views

1.Go to template
2.Click customize than click background >background image
3. Upload your image
4.Hit done and adjust just your tile and if your image is fits the width than don't tile.
5.Select tile horizontally if it's  shorter than the width.
6.Adjust the allignment

If you ever want to remove the blog title on the header bar, do the following:

Back in the Template section, click on Edit HTML.
Look for ]]></b:skin> inside your template’s code using Ctrl+F.

Copy/paste the code below right before and above it.
  .header-bar {
   display: none !important;