How to learn a back handspring at home?

ok well idk if this is a very good idea, but a good way to start is by doing a back walkover and instead of landing with your feet at the 2 different times, snap them down at the same time so you land with your feet together. do this until you have a rebound out of it. also jumping backwards is really scary and im a gymnast so i know how it feels, i still don't like landing on my back on the tramp, but yea.... So before you actually try it you have to make sure that your arms are really Strong and make sure that they wont 'give in'. You could try doing a lunge, then throw yourself into a handstand and snap down to try and get more of a feel. now you have to picture yourself doing it perfectly before you do it, i know it sounds crazy but thats how i got 1st on beam at states. Take a deep breath and count to three and swing and go for it WITH A SPOT! you cant just stand therefidgetingg because that is what creates fear, and all the time you spend there thinking about it the worse its going to seem, but theyre really not that hard once you get used to it. hope i helped GOOD LUCK :)