bulldogs can be a difficult breed to mate and whelp mark why dont you join and you can then ask as many questions as you want to instead of only being allowed to ask one question as a guest :-)
Why don't you contact your breeder? He may know someone who wants to use a dog of his lines. But be aware, studding doesn't come without responsibilty, risk and problems!
Have a read of the first post on the 'Breeding' forum of this site.
Bulldogs apparently are an exceptionally difficult breed to mate, so you will also need plenty of advice from a breed specialist. Are you a member of any of the breed clubs?