Build me an ebay theme for my listings

I need a sleek and professional theme related to my technology store that sells laptops and computers. I have attached photos below of an example listing of a company that sells similar stock to mine. I have had a logo and banner done and was wondering if the design from them can be incorporated into the design. I do have all files for logo and banner. it needs to follow the same theme.

Logo and banner is also attached below with associated files.