Bro the point of doing btwist is you going for a horizontal twist not a over head twist (your kinda doing a over head) so to fix that dont point your foot to the direction your going point it to the direction your facing ,and as for your cork , when you swing dont go for a slant gainer (cheat gainer) swing hour leg towards your shoulder almost vertical then you spin in the air .
Yo the way I got b twists easier is by going into them as if I was going for A twists. I personally never have don’t a twist but when I learned about the take off it helped.
For the b twist the over head becomes useful when u want to practice the double as it is easier to double twist over ur head and land in a hyper can of way but if ur horizontal u slam on ur side... Any way ur leg should over extend to make it completely over head...😊
Yeah or maybe even less. It took me 4 days to learn my backflip. Some good videos are the tapp brothers backflip fear. I also have a secret on my channel. All it requires is a cartwheel