Best ways to get the feature you want in an open source project:

1. Send a PR with your code/design
2. Create a bounty (so that another dev is incentived to do it for you)
3. Create a feature request ticket.
4. Help the project organize tickets.
5. Create tutorials and other content to help the project.

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55. Bake a cake to the creator's mom.
57. Learn MMA to visit the creator's bully in high school

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100. Secure a bunker for the creator in case of a nuclear armageddon

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9999. Trash the creator on social media until he does what you want.