Ask HN: How does your open source project ask for sponsors?

What is a classy way to ask for money for an open source project? I just now realized every project needs a desired outcome. For open source, money is a positive outcome.

I know this project is very small but I want to perfect the classy approach before trying it elsewhere.

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Sponsorship

\[ YOUR LOGO HERE \]

Please contact xxxxxx to discuss adding your company logo above and supporting this project.

https://github.com/fulldecent/FDSoundActivatedRecorder/blob/master/README.md

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Is that too much, too little? What other classy approach have you seen on other small to medium sized projects? I'm not talking about Joomla, but rather the millions of projects that HN readers are contributing to.