I just finished my first Twenty Eleven child theme for WordPress! I added a wide side bar, moved the site title on top of the header image.
The new size for the header is 1000px width X 175px height.
The font I added is called Oswald from Google fonts.
Please let me know if you have any troubles.
I forgot to add the CSS for the wp-pagenai plugin.Â After you install the theme. Upload the file pagenavi-css.css to your theme directory.