Adding your own Logo
If you’ve created your own logo then you can add it to the HeatMap Theme Logo Header bar by specifying its URL:
HeatMap Options -> Header Bar Options -> Logo URL

You should make your logo 110 pixels high and up to 430 pixels wide (in the default HeatMap Adsense Theme – Child Themes might need different sizes)
You can experiment with making it wider but remember that the [Header] Right widget position sits immediately to the right of the logo and pushing it too far might make your ad go where it ought not to.
Creating Your Logo to match the Header Background Image
If you want to overlay your logo to match the default header background you can take a copy of the header-bg.jpg image (found in the HeatMap Theme images directory) and use that as the background for your logo.
…Or just make the whole background image your logo
You could also change header-bg.jpg to include a logo design which stretches the full width of the Logo Bar. In this case you would leave the Logo URL field blank and untick the title and tagline option.

