Graphics/Icons/Headers for a new web site

Im new to this site so please accept my apologies if my description/request isnt detailed enough.

Im looking for a number of icons/headers to go onto new website currently being constructed.

Rather than photos, im looking for bespoke images/pictures to be created to be used on the site all to be of the same theme to help create a brand identity/feel for the site.

There will be a number of images required, the first will be for a group of icons on the screen to advise the user the area(s) they are about to navigate to.
The second will be part of a carousel on the websites home page so will need to be large enough (and interesting enough) to occupy this space.
The third will be for a larger icon, again to direct the user to a particular area in the site.

This is for an initial batch of images but i will require further images as new products are added to the site in the future.