You get 1$ In XRP for adding this picture for profile pic and signature
https://ibb.co/Vtfpzj6 and endfb.com gives everybody 5$ free in XRP for first post inside Facebook.
Endfb.com is a newly started business model that connects businesses to People who provide advertising power.
Companies, businesses and single individuals can sell their products and services as well as get paid for advertising other people’s products and services.
The business model overpowers Amazon and Ebay in possible social and financial gains for single individuals.
You did not write for how long the picture should be added and how long the signature should be worn, and most of all you did not write when the payment is to be made.
You have a -3 red trust, so I doubt anyone will trust you and wear your signature or / and avatar.
If you want anyone to join your campaign, better hire a reliable manager or at least use escrow to secure payouts for participants. I doubt that at least one user has agreed to your terms in this form.