I wouldn't to be honest, atleast not right away, I was researching betta breeding and there is more to it than one would think. First you need special fry foods, like baby brine shrimp or a microworm or eel culture, second you need to have the proper set up, the space an the money to do it. usualy you will have around 400 fry, which means about 20-40 males and a whole lot of females. Females can be kept in a community tank but after a certan age males will need to be jarred and seperated. plus bettas need frequent waterchanges if you dont have filtration so you will have to work hard to change the water in the males jars
then of course you have to find homes for them, and that can be a challenge, because you want to give them to people who will take care of them, and giving them to the pet store for nothing I strongly advise aganst, because most petstores are notorius for not taking proper care of the fish.
If you still want to breed them though there are a few things you can do to lessen the load on yourself, and I know of a site with lots more information,
http://www.bettatalk.com/ on the front page there is an article about responsible betta breeding, you can also order cultures and such from here, although if you plan on going with brine shrimp I am sure you can get a hatching kit from a petstore.
Wait untill you have food for the fry, and know the proper set up. again this site has tons of info on the proper setup, how to keep the male and female from killing eachother ect. Do your reaserch first and beleive me you and your fish will be happer in the end.
also crowntails are notorius for killing non crowntail mates, so you have to watch them closely during the spawning process