You generally only need to submit the Google CLA once, so if you've already submitted one for a different project, you probably don't need to do it again.
After your contribution is included, you will be listed in [CONTRIBUTORS](CONTRIBUTORS) and/or [AUTHORS](AUTHORS) files;
CONTRIBUTORS is the official list of people who can contribute (and typically have contributed) code to this repository, while the AUTHORS file lists the copyright holders.
If you would like to include a new font family in the Google Fonts collection we'll be very happy to include it, if it also meets the following criteria:
* The typeface design is original, or a legitimate revival of a design in the public domain, and of good quality. The Google Design team curates the overall Google Fonts collection and decides if fonts are of good quality. You can get general reviews of your project from the wider international type community during development by posting review requests in the [googlefonts-discuss](https://groups.google.com/forum/#!forum/googlefonts-discuss) group, and the [typedrawers](http://typedrawers.com/categories/critiques%E2%80%94type-design) review forum.
* The project is licensed under the [SIL Open Font License v1.1](http://scripts.sil.org/OFL), with no Reserved Font Name ([why](https://github.com/simoncozens/silson/issues/1))
* The project is developed on Github or similar, with complete corresponding sources, [open](http://producingoss.com) to public participation, and actively maintained. Sources mean the fonts are available in the preferred form of modification, plus reproducible build instructions or scripts
* All font files have at a minimum the 215 glyphs listed in our [latin_unique-glyphs.nam](https://github.com/google/fonts/blob/master/tools/encodings/latin_unique-glyphs.nam)
* A `README.md` file is included in the root of the source repository with [FONTLOG](http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=ofl-faq_web#43cecb44) information, and your name and Google+ profile link, so that we can prepare a description ([example](https://github.com/google/fonts/blob/master/ofl/poppins/DESCRIPTION.en_us.html)) and link your name to your profile ([list](https://github.com/google/fonts/blob/master/designers/profiles.csv))
* More detailed design and production details are listed in [googlefonts/gf-docs/ProjectChecklist.md](https://github.com/googlefonts/gf-docs/blob/master/ProjectChecklist.md)
(In the future we hope to provide guidance on making pull requests directly, but since we carefully check the technical aspects of the fonts, it's better to work with us on your upstream project.)