Selling my designs?

Do you mean like selling off the peg template designs? There are other sites that sell these, maybe contact them and see if they want their stock of templates increasing or improving on in some way? Otherwise I guess you'd have to set up a simple site to showcase what you're offering and do some research on companies that don't yet have a website that might like a straightforward presence. You'd have to be very strict as to what elements can be adapted or else I can see each client wanting a different shade of blue/the logo moving 3cm to the right/can we just make that picture a bit bigger etc to the point where you may as well have done a bespoke design.

Well what I meant was any other freelance forums and the like where someone may be looking to buy budget templates to either code or customize themselves.