I need a facebook banner

详细信息

**** I award lots of jobs to people all over the world. But for this specific task, I will only be accepting proposals from UK/USA ***
Hello graphical wizards!
I have 30 groups on Facebook, all in the same industry - Superyacht Jobs and Employment. They are all "supported" by our company Crewin.com - Please see website.
I need a facebook banner created that I can use across all of them as a generic banner. The banner must look good on desktop and also on mobile. Please see this group here as an example of where the banner will be used - https://www.facebook.com/groups/424186277931564
I am not creative so will need some guidance from you please :)

Maybe we can use a Superyacht related stock image background.
Information needed on the banner but not "in your face".
-Please do not post CV/Resume- Job Offers Only- Supported by Crewin.com
Please ask any questions and we can plan something together.
This must be completed within 48 hours.