To add a header to your template, go to your edit template section.

Scroll down until you see this:

td.title  {
    height: 140px;
    width: 700px;
    padding: 10px;
    background-image: url( http://www.efx2blogs.com/uploads/c/C...a/33.jpg);
    vertical-align: bottom;
    text-align: right;

As you can see the url for the image is already my preferred image. This is how you want yours:

td.title {
    height: 140px;
    width: 700px;
    padding: 10px;
    background-image: url(YOUR PHOTO URL) no-repeat;
    vertical-align: bottom;
    text-align: right;

Now to change the height  or width of your logo, simply adjust your height and width pixels. Take for instance, if your header image is 150px in height, change the height pixels to 150 and that's that. Keep in mind that you want your header image to fit well, if it too wide for your header space and template, it will not look as good as it can be. So choose wisely. 

TIP: Upload your images here: http://www.efx2blogs.com/manager/upl...=viewalbum

Not all templates are the same, but looks for similar aspects in your template, to figure things out.

That should be that. If further help is needed or you run into a problem please let us know here. :)