Since you were wonderful about adding the Sample Child Theme to your plugin, I am rewarding your awesomeness with a feature request! :)
The current plugin allows the header text to be overlaid on top of the logo. What I would really like is to have the logo and header text next to each other, not on top of each other.
For example, you can see my company logo on my About page. I'd like to put a scaled version of my logo in front of my site's current header text. The only way I can do that now is to design a custom banner as a graphics file in Adobe Illustrator.
Would it be difficult to modify your plugin so that the user can say, "Please put my logo before/under/after my header text"? If you add that feature, this plugin will be a big hit!