Have you asked around to see what tail types, colors, patterns, etc that people want? The BUYER or ADOPTER should have say.
Have you decided to work on color, form, or "just because?" It's very important to have a goal, not just fill LFS's...
Do you have medications on hand in case the PK male decides to take a good chunk out of your female? Unlike the long finned fellas, PK males are a lot more agile
Are the fish from a store? If from a pet store, keep in mind if you would like to continue breeding getting higher quality bettas would be a lot better, because you will have the upper hand with selling or rehoming bettas. I asked around, made a poll etc for the buyer/adopter, plus made sure to get a decent quality pair(s) :)
hope it helped a little bit. And I do understand the trial and error - I can only learn ever so much from paper and internet, but actually doing it you learn as well. Just make sure you have the basics down