Banner Designer For Over 300 Banners

Design details: We need a graphic designer to help work on over 300 banners, the banners reside on our website at the top of category and product ranges.

You can find an example of the banners here: https://www.workwearexpress.com/aprons-and-tabards/

Size is 880 x 200px and it must be designed to not hinder the text (ideally a solid colour).

We may be hiring more than one freelancers as we do have a long list to get through - we are looking for a proposal of 1 hour as a trial and then if successful we will use you full time to get through the list.
Target audience: B2B
Banner sizes: 880px width by 200px
Banner content: Static content
Ideas for the visual style: Product centric
Things to avoid: Anything to hinder text on the left
Website url: https://www.workwearexpress.com/aprons-and-tabards/
Website information: Example - Workwear Express
Extra notes: Please browse the site to get a feel for the other banners.