I need banner design for my Facebook page

Target audience: British tutors, teachers, and nannies looking for work
Kind of design: Facebook cover
Design details: I need to redesign my banner so it speaks a clear message to the young-mid age, well educated British teachers, tutors & nannies. It needs to speak "trust", "established", "exciting", "real work opportunities", and "your job searching will benefit from following us"..
Ideas for the visual style: Clear, light, well balanced and pleasant (open to suggestions), may combine imagery and text
Things to avoid: being cheesy
Preferred colors: open to suggestions
Website information: staff recruitment and educational consultacy
Extra notes:
We match childcare / education specialist with high paid jobs abroad for private house holds ( mainly in Russia). With that comes a comfortable life style, often luxurious and well paid. Applicants value trustworthiness and professionalism. We want them to be comfortable with signing up / liking/ following us, as this will open up new unique job prospects to them.

Our website: www.mentorandsons.com
OUR FACEBOOK page: www.facebook.com/mentorandsons

Our competition:
1) https://www.facebook.com/royalnannies
2)https://www.facebook.com/burlington.nannies?fref=ts