Well I understand being nervous. I suggest you read up on the breeding process as much as possible. You have to understand they do not and will not hate each other but it may seem that way. Proper conditioning is key so take your time with the female, she has to be ready and in the mood. She should have vertical bars on her body when ready. Have all the supplies ready at hand. Do not be afraid to remove the female and try later. There will often be chasing , nipping, flaring it is a normal part of the process. Do not be afraid but be very well educated on the subject. There are members here that can answer specific questions you may have. Best of luck, 99% of the time the fish will be fine if conditioned well and you keep an eye on them. Bettas are pretty scrappy lil fish by nature.
Proud IBC member