Canva designs for flyers & social media posts that can be edited

I am looking for someone to design & upload our posters into Canva so I can change them accordingly in the future.

I already have a flyer design so would like to mirror (although improve) the look of it as its already our branding style for 2 years.

I'd also like to have a Facebook cover image that I can change weekly with "next dates are" and also a post version to use in both Instagram and Facebook to cross post.

We run a car boot sale business and our dates change weekly for next weeks promotion and we also submit our dates straight after the last one with "see you at the next one"

To recap:

1× A5 style flyer (maybe 2 mirrored to make it easier as we have 4 venues, so print flyers double sided)
1 x Facebook cover
1 x Facebook/Instagram size post size

We already have the logo and previous flyers and can get the colours if required. I am looking for them to look similar but be improved as I am not keen on the 3 images used on the flyer.