Breeding any fish isnt gonna be easy. I myself have had a few betta spawns. My male was just like urs with the first spawn. Thing is you have to let them keep trying when they are ready again. After a couple bad spawns my bettas got the hang of things and had a few good spawns since.
http://www.sandiegoreefs.com/forums/...ies&highlight=
Now as far as clowns go it is a bit more difficult. You have to have a green water setup, rodifer setup, Baby brine shrimp set up. There is alot of research and trial and error in clown breeding. Pairs do not usually breed until they are established quite some time. It is unlikely you will just get a pair and they start laying eggs unless you buy a breeding pair. There are quite a few people on the boards who do raise clown fry and I am hopin to be one of them someday when my clowns finally do the deed. Note it has been 3 years in the waiting.
Here is some good reading.
http://www.breedclownfish.com/
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