On the eHarlequin.com home page, thoroughly review the "Write" section, including Writing Tips and Writing Guidelines.
Decide which imprint you want to write for. Harlequin has varying editorial guidelines for each imprint, and these are updated regularly. You'll find editor contact information, expected word count for your manuscript and detailed descriptions on what types of stories the editors seek. Submission guidelines will let you know if you need an agent to submit your work, if a query is sufficient or if your entire manuscript is required.
Before submitting a manuscript, look over eHarlequin's Submission Samples, which include examples of query letters, synopses, manuscript pages and proofreading marks. Use these guidelines to hone your romance writing skills and prepare your manuscript for a flawless submission.
Immerse yourself in Harlequin's world. Listen to Harlequin podcasts for insider advice from Harlequin editors and authors. Get involved with the online Harlequin community to receive support from other aspiring romance writers. Enter Harlequin's various writing competitions such as The Harlequin Presents Writing Competition.