add banner in virtuemart 404 page

[aminweb]

hi,
I enabled :  Enable VirtueMart 404 error handling  in configuration,
now, I want when VirtueMart 404 error page handling and show storefront page,show a image on top page.
please help me.

[Studio 42]

You need to check for the 404 value and add own override in the template category if the page is a 404