The technique I've usually seen succeed is when the author begins by posting an informative write-up about their project to developer focused websites (kinda li

The technique I've usually seen succeed is when the author begins by posting an informative write-up about their project to developer focused websites (kinda like the one we're one right now). You'd ideally want to highlight the future roadmap of the project (eg. things that you want to incorporate into it) and ask people with relevant skills to contribute and/or spread the word. All the best!