Twenty Twelve logo/site title alignment

Hi

I’m using the twenty Twelve Theme, and have added a small logo to the top of the page (via the header.php file) – see here: https://i15.photobucket.com/albums/a364/simond1977/ScreenShot1_zps0ac14357.png

However, I want to align the logo to be alongside the site title etc instead of on a new line, like this: (I made this in Pixelmator) https://i15.photobucket.com/albums/a364/simond1977/ScreenShot2_zps3c07723e.png

Any ideas?

Thanks.