Many publishers are open to you retaining some rights. Adding an addendum to your contract/author's agreement with your publisher is a convenient way to seek the rights you would like to retain. Here are the steps to attaching an addendum:
- Sign your publisher’s copyright transfer or publication agreement when you submit your final manuscript for publication. Note in the cover letter that the the agreement is subject to the attached amendment.
- Attach the amendment with the information filled in and your signature at the bottom.
- Send both to publisher and save a copy for your records.
- The publisher may accept the amendment, reject it outright, or attempt to negotiate the agreement. You can choose to sign the original or modified version of the agreement, continue negotiations, or find a new publisher.