how do i breed my stud

First of all, have a read of the first post on the 'Breeding' forum of this site.

Then, if you still want to go ahead, start getting his tests done (it'll cost you a couple of hundred pounds) and get him out into the show ring or the field trials, where bitch owners will see him!
:)

There is a lady called JaneS who is very good in the knowledge of cocker spaniels on here, I'm sure she'll be able to give you some excellent advise.

The post JG refers to was written by JaneS as it happens :) although of course it is applicable to all breeds not just Cockers.