Design for ‘refer a friend’ business cards and flyers

I’ve been recommended to you by Liz Harris.
I own an aesthetics clinic and I want to implement a ‘refer a friend’ scheme. I am looking for someone to design a card and a A5 flyer explaining the scheme to give out to my patients.
Is this something you might be able to help with? I’ve attached some examples and some wording. I’m in the process of having a new website built but it isn’t published yet. I can take screenshots of the beta version of it so that you can match colours, logo etc.
It would be great if you could let me know how much it would cost for you to do this work and how long you think it might take?
I’m planning to use Solopress for the printing so the design would need to conform to their specifications.
Sincerely,
Alexis