thanks man, see this is what i did. r u still in high school, or do you go to a gy to work out ever? usually at weight lifting centers theres a basketball court someone in the complex. on walls in gymnasiums, theres ALWAYS ALWAYS mats on the walls, kind of like a safty issue or something idk. you go there and the mats on the walls help you get more power off of the flip, and it is easier to grip with your shoes. the mat undernieth i got lucky with becuz at the YMCA there is also a gymnastic room with foam pits and shit( got kicked out of there too many times to even go back in, something about if i got hurt the insurriance would be high, suck a dick) they had mats laying around so i took one just to start of on just incase i fucked up or something. you really dont need those but it was my first day trying them so i was kinda puss, but dude you can definatly do them, i see in some of your vids you can do a backflip on the ground, and doing wall-flips are easier than backflips on the ground, trust me i can do both. you just gotta go for it man, you have the skill needed, GL
oh and for everyone heres another vid
http://youtube.com/watch?v=iodGIGQ93Bk